Home / 74,815.20-112,221.69-34,811.78

Finding the Fourth Proportional to 74,815.20, 112,221.69 and 34,811.78

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Solution

The fourth proportional to 74,815.20, 112,221.69 and 34,811.78 is: 52,217.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,815.20 : 112,221.69 = 34,811.78 : x
  2. Step 2: Convert to fraction form
    74,815.20/112,221.69 = 34,811.78/x
  3. Step 3: Cross multiply
    74,815.20x = 112,221.69 × 34,811.78
  4. Step 4: Simplify right side
    74,815.20x = 3,906,636,890.00
  5. Step 5: Solve for x
    x = 3,906,636,890.00/74,815.20
  6. Step 6: Final answer
    x = 52,217.15

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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.