Home / 80,991.55-121,483.45-28,397.04

Finding the Fourth Proportional to 80,991.55, 121,483.45 and 28,397.04

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Solution

The fourth proportional to 80,991.55, 121,483.45 and 28,397.04 is: 42,594.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,991.55 : 121,483.45 = 28,397.04 : x
  2. Step 2: Convert to fraction form
    80,991.55/121,483.45 = 28,397.04/x
  3. Step 3: Cross multiply
    80,991.55x = 121,483.45 × 28,397.04
  4. Step 4: Simplify right side
    80,991.55x = 3,449,770,388.99
  5. Step 5: Solve for x
    x = 3,449,770,388.99/80,991.55
  6. Step 6: Final answer
    x = 42,594.20

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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.