Home / 71,343.28-98,456.68-39,512.20

Finding the Fourth Proportional to 71,343.28, 98,456.68 and 39,512.20

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Solution

The fourth proportional to 71,343.28, 98,456.68 and 39,512.20 is: 54,528.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,343.28 : 98,456.68 = 39,512.20 : x
  2. Step 2: Convert to fraction form
    71,343.28/98,456.68 = 39,512.20/x
  3. Step 3: Cross multiply
    71,343.28x = 98,456.68 × 39,512.20
  4. Step 4: Simplify right side
    71,343.28x = 3,890,240,031.50
  5. Step 5: Solve for x
    x = 3,890,240,031.50/71,343.28
  6. Step 6: Final answer
    x = 54,528.47

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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.