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Finding the Fourth Proportional to 79,695.20, 109,939.02 and 49,498.40

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Solution

The fourth proportional to 79,695.20, 109,939.02 and 49,498.40 is: 68,282.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,695.20 : 109,939.02 = 49,498.40 : x
  2. Step 2: Convert to fraction form
    79,695.20/109,939.02 = 49,498.40/x
  3. Step 3: Cross multiply
    79,695.20x = 109,939.02 × 49,498.40
  4. Step 4: Simplify right side
    79,695.20x = 5,441,805,587.57
  5. Step 5: Solve for x
    x = 5,441,805,587.57/79,695.20
  6. Step 6: Final answer
    x = 68,282.73

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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.