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Finding the Fourth Proportional to 79,555.86, 109,759.76 and 49,330.31

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Solution

The fourth proportional to 79,555.86, 109,759.76 and 49,330.31 is: 68,058.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,555.86 : 109,759.76 = 49,330.31 : x
  2. Step 2: Convert to fraction form
    79,555.86/109,759.76 = 49,330.31/x
  3. Step 3: Cross multiply
    79,555.86x = 109,759.76 × 49,330.31
  4. Step 4: Simplify right side
    79,555.86x = 5,414,482,560.85
  5. Step 5: Solve for x
    x = 5,414,482,560.85/79,555.86
  6. Step 6: Final answer
    x = 68,058.88

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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.