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Finding the Fourth Proportional to 74,511.28, 111,766.56 and 18,351.28

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Solution

The fourth proportional to 74,511.28, 111,766.56 and 18,351.28 is: 27,526.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,511.28 : 111,766.56 = 18,351.28 : x
  2. Step 2: Convert to fraction form
    74,511.28/111,766.56 = 18,351.28/x
  3. Step 3: Cross multiply
    74,511.28x = 111,766.56 × 18,351.28
  4. Step 4: Simplify right side
    74,511.28x = 2,051,059,437.20
  5. Step 5: Solve for x
    x = 2,051,059,437.20/74,511.28
  6. Step 6: Final answer
    x = 27,526.83

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1.5x scale

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.