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Finding the Fourth Proportional to 91,304.68, 136,983.12 and 53,898.88

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Solution

The fourth proportional to 91,304.68, 136,983.12 and 53,898.88 is: 80,863.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,304.68 : 136,983.12 = 53,898.88 : x
  2. Step 2: Convert to fraction form
    91,304.68/136,983.12 = 53,898.88/x
  3. Step 3: Cross multiply
    91,304.68x = 136,983.12 × 53,898.88
  4. Step 4: Simplify right side
    91,304.68x = 7,383,236,746.91
  5. Step 5: Solve for x
    x = 7,383,236,746.91/91,304.68
  6. Step 6: Final answer
    x = 80,863.73

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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.