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Finding the Fourth Proportional to 80,060.79, 110,454.67 and 61,669.47

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Solution

The fourth proportional to 80,060.79, 110,454.67 and 61,669.47 is: 85,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,060.79 : 110,454.67 = 61,669.47 : x
  2. Step 2: Convert to fraction form
    80,060.79/110,454.67 = 61,669.47/x
  3. Step 3: Cross multiply
    80,060.79x = 110,454.67 × 61,669.47
  4. Step 4: Simplify right side
    80,060.79x = 6,811,680,957.92
  5. Step 5: Solve for x
    x = 6,811,680,957.92/80,060.79
  6. Step 6: Final answer
    x = 85,081.36

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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.