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Finding the Fourth Proportional to 101,489.47, 152,248.79 and 31,374.25

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Solution

The fourth proportional to 101,489.47, 152,248.79 and 31,374.25 is: 47,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,489.47 : 152,248.79 = 31,374.25 : x
  2. Step 2: Convert to fraction form
    101,489.47/152,248.79 = 31,374.25/x
  3. Step 3: Cross multiply
    101,489.47x = 152,248.79 × 31,374.25
  4. Step 4: Simplify right side
    101,489.47x = 4,776,691,599.66
  5. Step 5: Solve for x
    x = 4,776,691,599.66/101,489.47
  6. Step 6: Final answer
    x = 47,065.88

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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.