Home / 80,972.56-121,445.07-21,795.04

Finding the Fourth Proportional to 80,972.56, 121,445.07 and 21,795.04

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Solution

The fourth proportional to 80,972.56, 121,445.07 and 21,795.04 is: 32,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,972.56 : 121,445.07 = 21,795.04 : x
  2. Step 2: Convert to fraction form
    80,972.56/121,445.07 = 21,795.04/x
  3. Step 3: Cross multiply
    80,972.56x = 121,445.07 × 21,795.04
  4. Step 4: Simplify right side
    80,972.56x = 2,646,900,158.45
  5. Step 5: Solve for x
    x = 2,646,900,158.45/80,972.56
  6. Step 6: Final answer
    x = 32,688.85

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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.