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Finding the Fourth Proportional to 73,870.20, 110,819.70 and 29,489.40

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Solution

The fourth proportional to 73,870.20, 110,819.70 and 29,489.40 is: 44,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,870.20 : 110,819.70 = 29,489.40 : x
  2. Step 2: Convert to fraction form
    73,870.20/110,819.70 = 29,489.40/x
  3. Step 3: Cross multiply
    73,870.20x = 110,819.70 × 29,489.40
  4. Step 4: Simplify right side
    73,870.20x = 3,268,006,461.18
  5. Step 5: Solve for x
    x = 3,268,006,461.18/73,870.20
  6. Step 6: Final answer
    x = 44,239.85

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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.