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Finding the Fourth Proportional to 87,659.52, 120,979.04 and 53,690.44

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Solution

The fourth proportional to 87,659.52, 120,979.04 and 53,690.44 is: 74,098.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,659.52 : 120,979.04 = 53,690.44 : x
  2. Step 2: Convert to fraction form
    87,659.52/120,979.04 = 53,690.44/x
  3. Step 3: Cross multiply
    87,659.52x = 120,979.04 × 53,690.44
  4. Step 4: Simplify right side
    87,659.52x = 6,495,417,888.38
  5. Step 5: Solve for x
    x = 6,495,417,888.38/87,659.52
  6. Step 6: Final answer
    x = 74,098.26

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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.