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Finding the Fourth Proportional to 71,329.50, 98,433.50 and 39,497.71

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Solution

The fourth proportional to 71,329.50, 98,433.50 and 39,497.71 is: 54,506.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,329.50 : 98,433.50 = 39,497.71 : x
  2. Step 2: Convert to fraction form
    71,329.50/98,433.50 = 39,497.71/x
  3. Step 3: Cross multiply
    71,329.50x = 98,433.50 × 39,497.71
  4. Step 4: Simplify right side
    71,329.50x = 3,887,897,837.29
  5. Step 5: Solve for x
    x = 3,887,897,837.29/71,329.50
  6. Step 6: Final answer
    x = 54,506.17

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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.