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Finding the Fourth Proportional to 72,369.65, 108,541.72 and 27,959.88

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Solution

The fourth proportional to 72,369.65, 108,541.72 and 27,959.88 is: 41,934.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,369.65 : 108,541.72 = 27,959.88 : x
  2. Step 2: Convert to fraction form
    72,369.65/108,541.72 = 27,959.88/x
  3. Step 3: Cross multiply
    72,369.65x = 108,541.72 × 27,959.88
  4. Step 4: Simplify right side
    72,369.65x = 3,034,813,908.17
  5. Step 5: Solve for x
    x = 3,034,813,908.17/72,369.65
  6. Step 6: Final answer
    x = 41,934.90

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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.