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Finding the Fourth Proportional to 72,174.84, 108,259.80 and 25,426.52

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Solution

The fourth proportional to 72,174.84, 108,259.80 and 25,426.52 is: 38,138.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,174.84 : 108,259.80 = 25,426.52 : x
  2. Step 2: Convert to fraction form
    72,174.84/108,259.80 = 25,426.52/x
  3. Step 3: Cross multiply
    72,174.84x = 108,259.80 × 25,426.52
  4. Step 4: Simplify right side
    72,174.84x = 2,752,669,969.90
  5. Step 5: Solve for x
    x = 2,752,669,969.90/72,174.84
  6. Step 6: Final answer
    x = 38,138.91

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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.