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Finding the Fourth Proportional to 65,129.52, 89,846.28 and 43,871.88

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Solution

The fourth proportional to 65,129.52, 89,846.28 and 43,871.88 is: 60,521.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,129.52 : 89,846.28 = 43,871.88 : x
  2. Step 2: Convert to fraction form
    65,129.52/89,846.28 = 43,871.88/x
  3. Step 3: Cross multiply
    65,129.52x = 89,846.28 × 43,871.88
  4. Step 4: Simplify right side
    65,129.52x = 3,941,725,214.61
  5. Step 5: Solve for x
    x = 3,941,725,214.61/65,129.52
  6. Step 6: Final answer
    x = 60,521.33

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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.