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Finding the Fourth Proportional to 101,687.28, 152,530.95 and 27,815.28

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Solution

The fourth proportional to 101,687.28, 152,530.95 and 27,815.28 is: 41,722.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,687.28 : 152,530.95 = 27,815.28 : x
  2. Step 2: Convert to fraction form
    101,687.28/152,530.95 = 27,815.28/x
  3. Step 3: Cross multiply
    101,687.28x = 152,530.95 × 27,815.28
  4. Step 4: Simplify right side
    101,687.28x = 4,242,691,082.92
  5. Step 5: Solve for x
    x = 4,242,691,082.92/101,687.28
  6. Step 6: Final answer
    x = 41,722.93

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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.