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Finding the Fourth Proportional to 80,953.97, 121,465.84 and 43,470.20

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Solution

The fourth proportional to 80,953.97, 121,465.84 and 43,470.20 is: 65,224.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,953.97 : 121,465.84 = 43,470.20 : x
  2. Step 2: Convert to fraction form
    80,953.97/121,465.84 = 43,470.20/x
  3. Step 3: Cross multiply
    80,953.97x = 121,465.84 × 43,470.20
  4. Step 4: Simplify right side
    80,953.97x = 5,280,144,357.97
  5. Step 5: Solve for x
    x = 5,280,144,357.97/80,953.97
  6. Step 6: Final answer
    x = 65,224.04

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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.