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Finding the Fourth Proportional to 72,392.30, 108,588.45 and 25,649.90

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Solution

The fourth proportional to 72,392.30, 108,588.45 and 25,649.90 is: 38,474.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,392.30 : 108,588.45 = 25,649.90 : x
  2. Step 2: Convert to fraction form
    72,392.30/108,588.45 = 25,649.90/x
  3. Step 3: Cross multiply
    72,392.30x = 108,588.45 × 25,649.90
  4. Step 4: Simplify right side
    72,392.30x = 2,785,282,883.66
  5. Step 5: Solve for x
    x = 2,785,282,883.66/72,392.30
  6. Step 6: Final answer
    x = 38,474.85

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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.