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Finding the Fourth Proportional to 76,039.60, 114,059.40 and 75,521.20

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Solution

The fourth proportional to 76,039.60, 114,059.40 and 75,521.20 is: 113,281.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,039.60 : 114,059.40 = 75,521.20 : x
  2. Step 2: Convert to fraction form
    76,039.60/114,059.40 = 75,521.20/x
  3. Step 3: Cross multiply
    76,039.60x = 114,059.40 × 75,521.20
  4. Step 4: Simplify right side
    76,039.60x = 8,613,902,759.28
  5. Step 5: Solve for x
    x = 8,613,902,759.28/76,039.60
  6. Step 6: Final answer
    x = 113,281.80

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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.