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Finding the Fourth Proportional to 79,677.73, 109,940.25 and 49,470.40

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Solution

The fourth proportional to 79,677.73, 109,940.25 and 49,470.40 is: 68,259.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,677.73 : 109,940.25 = 49,470.40 : x
  2. Step 2: Convert to fraction form
    79,677.73/109,940.25 = 49,470.40/x
  3. Step 3: Cross multiply
    79,677.73x = 109,940.25 × 49,470.40
  4. Step 4: Simplify right side
    79,677.73x = 5,438,788,143.60
  5. Step 5: Solve for x
    x = 5,438,788,143.60/79,677.73
  6. Step 6: Final answer
    x = 68,259.83

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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.