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Finding the Fourth Proportional to 71,332.76, 98,437.90 and 39,501.56

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Solution

The fourth proportional to 71,332.76, 98,437.90 and 39,501.56 is: 54,511.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,332.76 : 98,437.90 = 39,501.56 : x
  2. Step 2: Convert to fraction form
    71,332.76/98,437.90 = 39,501.56/x
  3. Step 3: Cross multiply
    71,332.76x = 98,437.90 × 39,501.56
  4. Step 4: Simplify right side
    71,332.76x = 3,888,450,613.12
  5. Step 5: Solve for x
    x = 3,888,450,613.12/71,332.76
  6. Step 6: Final answer
    x = 54,511.43

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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.