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Finding the Fourth Proportional to 62,138.30, 93,207.45 and 20,585.30

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Solution

The fourth proportional to 62,138.30, 93,207.45 and 20,585.30 is: 30,877.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,138.30 : 93,207.45 = 20,585.30 : x
  2. Step 2: Convert to fraction form
    62,138.30/93,207.45 = 20,585.30/x
  3. Step 3: Cross multiply
    62,138.30x = 93,207.45 × 20,585.30
  4. Step 4: Simplify right side
    62,138.30x = 1,918,703,320.49
  5. Step 5: Solve for x
    x = 1,918,703,320.49/62,138.30
  6. Step 6: Final answer
    x = 30,877.95

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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.