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Finding the Fourth Proportional to 65,264.67, 90,073.17 and 38,405.88

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Solution

The fourth proportional to 65,264.67, 90,073.17 and 38,405.88 is: 53,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,264.67 : 90,073.17 = 38,405.88 : x
  2. Step 2: Convert to fraction form
    65,264.67/90,073.17 = 38,405.88/x
  3. Step 3: Cross multiply
    65,264.67x = 90,073.17 × 38,405.88
  4. Step 4: Simplify right side
    65,264.67x = 3,459,339,358.24
  5. Step 5: Solve for x
    x = 3,459,339,358.24/65,264.67
  6. Step 6: Final answer
    x = 53,004.78

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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.