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Finding the Fourth Proportional to 74,932.34, 112,395.87 and 18,772.92

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Solution

The fourth proportional to 74,932.34, 112,395.87 and 18,772.92 is: 28,158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,932.34 : 112,395.87 = 18,772.92 : x
  2. Step 2: Convert to fraction form
    74,932.34/112,395.87 = 18,772.92/x
  3. Step 3: Cross multiply
    74,932.34x = 112,395.87 × 18,772.92
  4. Step 4: Simplify right side
    74,932.34x = 2,109,998,675.84
  5. Step 5: Solve for x
    x = 2,109,998,675.84/74,932.34
  6. Step 6: Final answer
    x = 28,158.72

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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.