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Finding the Fourth Proportional to 55,063.52, 75,987.24 and 29,913.20

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Solution

The fourth proportional to 55,063.52, 75,987.24 and 29,913.20 is: 41,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,063.52 : 75,987.24 = 29,913.20 : x
  2. Step 2: Convert to fraction form
    55,063.52/75,987.24 = 29,913.20/x
  3. Step 3: Cross multiply
    55,063.52x = 75,987.24 × 29,913.20
  4. Step 4: Simplify right side
    55,063.52x = 2,273,021,507.57
  5. Step 5: Solve for x
    x = 2,273,021,507.57/55,063.52
  6. Step 6: Final answer
    x = 41,279.99

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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.