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Finding the Fourth Proportional to 65,520.31, 98,132.80 and 45,886.52

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Solution

The fourth proportional to 65,520.31, 98,132.80 and 45,886.52 is: 68,726.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,520.31 : 98,132.80 = 45,886.52 : x
  2. Step 2: Convert to fraction form
    65,520.31/98,132.80 = 45,886.52/x
  3. Step 3: Cross multiply
    65,520.31x = 98,132.80 × 45,886.52
  4. Step 4: Simplify right side
    65,520.31x = 4,502,972,689.86
  5. Step 5: Solve for x
    x = 4,502,972,689.86/65,520.31
  6. Step 6: Final answer
    x = 68,726.36

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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.