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Finding the Fourth Proportional to 80,798.65, 121,121.29 and 28,194.01

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Solution

The fourth proportional to 80,798.65, 121,121.29 and 28,194.01 is: 42,264.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,798.65 : 121,121.29 = 28,194.01 : x
  2. Step 2: Convert to fraction form
    80,798.65/121,121.29 = 28,194.01/x
  3. Step 3: Cross multiply
    80,798.65x = 121,121.29 × 28,194.01
  4. Step 4: Simplify right side
    80,798.65x = 3,414,894,861.47
  5. Step 5: Solve for x
    x = 3,414,894,861.47/80,798.65
  6. Step 6: Final answer
    x = 42,264.26

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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.