Home / 80,731.62-121,098.04-28,141.16

Finding the Fourth Proportional to 80,731.62, 121,098.04 and 28,141.16

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Solution

The fourth proportional to 80,731.62, 121,098.04 and 28,141.16 is: 42,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,731.62 : 121,098.04 = 28,141.16 : x
  2. Step 2: Convert to fraction form
    80,731.62/121,098.04 = 28,141.16/x
  3. Step 3: Cross multiply
    80,731.62x = 121,098.04 × 28,141.16
  4. Step 4: Simplify right side
    80,731.62x = 3,407,838,643.48
  5. Step 5: Solve for x
    x = 3,407,838,643.48/80,731.62
  6. Step 6: Final answer
    x = 42,211.94

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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.