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Finding the Fourth Proportional to 45,999.60, 68,999.40 and 30,253.20

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Solution

The fourth proportional to 45,999.60, 68,999.40 and 30,253.20 is: 45,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,999.60 : 68,999.40 = 30,253.20 : x
  2. Step 2: Convert to fraction form
    45,999.60/68,999.40 = 30,253.20/x
  3. Step 3: Cross multiply
    45,999.60x = 68,999.40 × 30,253.20
  4. Step 4: Simplify right side
    45,999.60x = 2,087,452,648.08
  5. Step 5: Solve for x
    x = 2,087,452,648.08/45,999.60
  6. Step 6: Final answer
    x = 45,379.80

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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.