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Finding the Fourth Proportional to 71,463.67, 98,616.48 and 39,631.88

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Solution

The fourth proportional to 71,463.67, 98,616.48 and 39,631.88 is: 54,690.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,463.67 : 98,616.48 = 39,631.88 : x
  2. Step 2: Convert to fraction form
    71,463.67/98,616.48 = 39,631.88/x
  3. Step 3: Cross multiply
    71,463.67x = 98,616.48 × 39,631.88
  4. Step 4: Simplify right side
    71,463.67x = 3,908,356,501.38
  5. Step 5: Solve for x
    x = 3,908,356,501.38/71,463.67
  6. Step 6: Final answer
    x = 54,690.12

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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.