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Finding the Fourth Proportional to 70,278.53, 105,248.84 and 40,201.61

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Solution

The fourth proportional to 70,278.53, 105,248.84 and 40,201.61 is: 60,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,278.53 : 105,248.84 = 40,201.61 : x
  2. Step 2: Convert to fraction form
    70,278.53/105,248.84 = 40,201.61/x
  3. Step 3: Cross multiply
    70,278.53x = 105,248.84 × 40,201.61
  4. Step 4: Simplify right side
    70,278.53x = 4,231,172,091.38
  5. Step 5: Solve for x
    x = 4,231,172,091.38/70,278.53
  6. Step 6: Final answer
    x = 60,205.76

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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.