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Finding the Fourth Proportional to 91,754.97, 137,645.29 and 28,579.68

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Solution

The fourth proportional to 91,754.97, 137,645.29 and 28,579.68 is: 42,873.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,754.97 : 137,645.29 = 28,579.68 : x
  2. Step 2: Convert to fraction form
    91,754.97/137,645.29 = 28,579.68/x
  3. Step 3: Cross multiply
    91,754.97x = 137,645.29 × 28,579.68
  4. Step 4: Simplify right side
    91,754.97x = 3,933,857,510.58
  5. Step 5: Solve for x
    x = 3,933,857,510.58/91,754.97
  6. Step 6: Final answer
    x = 42,873.51

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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.