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Finding the Fourth Proportional to 71,463.40, 98,613.03 and 39,632.20

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Solution

The fourth proportional to 71,463.40, 98,613.03 and 39,632.20 is: 54,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,463.40 : 98,613.03 = 39,632.20 : x
  2. Step 2: Convert to fraction form
    71,463.40/98,613.03 = 39,632.20/x
  3. Step 3: Cross multiply
    71,463.40x = 98,613.03 × 39,632.20
  4. Step 4: Simplify right side
    71,463.40x = 3,908,251,327.57
  5. Step 5: Solve for x
    x = 3,908,251,327.57/71,463.40
  6. Step 6: Final answer
    x = 54,688.85

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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.