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Finding the Fourth Proportional to 62,105.70, 93,145.49 and 19,989.55

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Solution

The fourth proportional to 62,105.70, 93,145.49 and 19,989.55 is: 29,980.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,105.70 : 93,145.49 = 19,989.55 : x
  2. Step 2: Convert to fraction form
    62,105.70/93,145.49 = 19,989.55/x
  3. Step 3: Cross multiply
    62,105.70x = 93,145.49 × 19,989.55
  4. Step 4: Simplify right side
    62,105.70x = 1,861,935,863.95
  5. Step 5: Solve for x
    x = 1,861,935,863.95/62,105.70
  6. Step 6: Final answer
    x = 29,980.11

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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.