Home / 71,387.55-98,515.50-39,557.13

Finding the Fourth Proportional to 71,387.55, 98,515.50 and 39,557.13

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Solution

The fourth proportional to 71,387.55, 98,515.50 and 39,557.13 is: 54,589.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,387.55 : 98,515.50 = 39,557.13 : x
  2. Step 2: Convert to fraction form
    71,387.55/98,515.50 = 39,557.13/x
  3. Step 3: Cross multiply
    71,387.55x = 98,515.50 × 39,557.13
  4. Step 4: Simplify right side
    71,387.55x = 3,896,990,440.52
  5. Step 5: Solve for x
    x = 3,896,990,440.52/71,387.55
  6. Step 6: Final answer
    x = 54,589.22

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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.