Home / 81,458,800.20-122,188,200.30-30,330,239.40

Finding the Fourth Proportional to 81,458,800.20, 122,188,200.30 and 30,330,239.40

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Solution

The fourth proportional to 81,458,800.20, 122,188,200.30 and 30,330,239.40 is: 45,495,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,458,800.20 : 122,188,200.30 = 30,330,239.40 : x
  2. Step 2: Convert to fraction form
    81,458,800.20/122,188,200.30 = 30,330,239.40/x
  3. Step 3: Cross multiply
    81,458,800.20x = 122,188,200.30 × 30,330,239.40
  4. Step 4: Simplify right side
    81,458,800.20x = 3,705,997,366,954,151.50
  5. Step 5: Solve for x
    x = 3,705,997,366,954,151.50/81,458,800.20
  6. Step 6: Final answer
    x = 45,495,359.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.