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Finding the Fourth Proportional to 79,125.59, 109,195.90 and 43,315.61

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Solution

The fourth proportional to 79,125.59, 109,195.90 and 43,315.61 is: 59,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,125.59 : 109,195.90 = 43,315.61 : x
  2. Step 2: Convert to fraction form
    79,125.59/109,195.90 = 43,315.61/x
  3. Step 3: Cross multiply
    79,125.59x = 109,195.90 × 43,315.61
  4. Step 4: Simplify right side
    79,125.59x = 4,729,886,363.73
  5. Step 5: Solve for x
    x = 4,729,886,363.73/79,125.59
  6. Step 6: Final answer
    x = 59,776.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.