Home / 71,387.20-98,516.28-39,559.60

Finding the Fourth Proportional to 71,387.20, 98,516.28 and 39,559.60

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Solution

The fourth proportional to 71,387.20, 98,516.28 and 39,559.60 is: 54,593.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,387.20 : 98,516.28 = 39,559.60 : x
  2. Step 2: Convert to fraction form
    71,387.20/98,516.28 = 39,559.60/x
  3. Step 3: Cross multiply
    71,387.20x = 98,516.28 × 39,559.60
  4. Step 4: Simplify right side
    71,387.20x = 3,897,264,630.29
  5. Step 5: Solve for x
    x = 3,897,264,630.29/71,387.20
  6. Step 6: Final answer
    x = 54,593.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.