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Finding the Fourth Proportional to 80,359.76, 120,384.12 and 61,801.04

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Solution

The fourth proportional to 80,359.76, 120,384.12 and 61,801.04 is: 92,581.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,359.76 : 120,384.12 = 61,801.04 : x
  2. Step 2: Convert to fraction form
    80,359.76/120,384.12 = 61,801.04/x
  3. Step 3: Cross multiply
    80,359.76x = 120,384.12 × 61,801.04
  4. Step 4: Simplify right side
    80,359.76x = 7,439,863,815.48
  5. Step 5: Solve for x
    x = 7,439,863,815.48/80,359.76
  6. Step 6: Final answer
    x = 92,581.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.