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Finding the Fourth Proportional to 71,328.98, 98,433.97 and 39,497.87

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Solution

The fourth proportional to 71,328.98, 98,433.97 and 39,497.87 is: 54,507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,328.98 : 98,433.97 = 39,497.87 : x
  2. Step 2: Convert to fraction form
    71,328.98/98,433.97 = 39,497.87/x
  3. Step 3: Cross multiply
    71,328.98x = 98,433.97 × 39,497.87
  4. Step 4: Simplify right side
    71,328.98x = 3,887,932,150.64
  5. Step 5: Solve for x
    x = 3,887,932,150.64/71,328.98
  6. Step 6: Final answer
    x = 54,507.05

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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.