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Finding the Fourth Proportional to 72,658.08, 109,015.13 and 25,278.08

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Solution

The fourth proportional to 72,658.08, 109,015.13 and 25,278.08 is: 37,926.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,658.08 : 109,015.13 = 25,278.08 : x
  2. Step 2: Convert to fraction form
    72,658.08/109,015.13 = 25,278.08/x
  3. Step 3: Cross multiply
    72,658.08x = 109,015.13 × 25,278.08
  4. Step 4: Simplify right side
    72,658.08x = 2,755,692,695.47
  5. Step 5: Solve for x
    x = 2,755,692,695.47/72,658.08
  6. Step 6: Final answer
    x = 37,926.86

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1.5x scale

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.