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Finding the Fourth Proportional to 79,191.27, 109,280.75 and 47,377.71

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Solution

The fourth proportional to 79,191.27, 109,280.75 and 47,377.71 is: 65,379.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,191.27 : 109,280.75 = 47,377.71 : x
  2. Step 2: Convert to fraction form
    79,191.27/109,280.75 = 47,377.71/x
  3. Step 3: Cross multiply
    79,191.27x = 109,280.75 × 47,377.71
  4. Step 4: Simplify right side
    79,191.27x = 5,177,471,445.19
  5. Step 5: Solve for x
    x = 5,177,471,445.19/79,191.27
  6. Step 6: Final answer
    x = 65,379.32

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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.