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Finding the Fourth Proportional to 69,203.52, 95,495.12 and 38,979.20

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Solution

The fourth proportional to 69,203.52, 95,495.12 and 38,979.20 is: 53,788.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,203.52 : 95,495.12 = 38,979.20 : x
  2. Step 2: Convert to fraction form
    69,203.52/95,495.12 = 38,979.20/x
  3. Step 3: Cross multiply
    69,203.52x = 95,495.12 × 38,979.20
  4. Step 4: Simplify right side
    69,203.52x = 3,722,323,381.50
  5. Step 5: Solve for x
    x = 3,722,323,381.50/69,203.52
  6. Step 6: Final answer
    x = 53,788.06

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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.