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Finding the Fourth Proportional to 40,691.20, 60,907.20 and 29,027.20

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Solution

The fourth proportional to 40,691.20, 60,907.20 and 29,027.20 is: 43,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,691.20 : 60,907.20 = 29,027.20 : x
  2. Step 2: Convert to fraction form
    40,691.20/60,907.20 = 29,027.20/x
  3. Step 3: Cross multiply
    40,691.20x = 60,907.20 × 29,027.20
  4. Step 4: Simplify right side
    40,691.20x = 1,767,965,475.84
  5. Step 5: Solve for x
    x = 1,767,965,475.84/40,691.20
  6. Step 6: Final answer
    x = 43,448.35

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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.