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Finding the Fourth Proportional to 65,472.13, 98,213.85 and 18,087.20

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Solution

The fourth proportional to 65,472.13, 98,213.85 and 18,087.20 is: 27,132.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,472.13 : 98,213.85 = 18,087.20 : x
  2. Step 2: Convert to fraction form
    65,472.13/98,213.85 = 18,087.20/x
  3. Step 3: Cross multiply
    65,472.13x = 98,213.85 × 18,087.20
  4. Step 4: Simplify right side
    65,472.13x = 1,776,413,547.72
  5. Step 5: Solve for x
    x = 1,776,413,547.72/65,472.13
  6. Step 6: Final answer
    x = 27,132.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.