Home / 81,119.16-121,685.88-28,529.04

Finding the Fourth Proportional to 81,119.16, 121,685.88 and 28,529.04

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Solution

The fourth proportional to 81,119.16, 121,685.88 and 28,529.04 is: 42,796.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,119.16 : 121,685.88 = 28,529.04 : x
  2. Step 2: Convert to fraction form
    81,119.16/121,685.88 = 28,529.04/x
  3. Step 3: Cross multiply
    81,119.16x = 121,685.88 × 28,529.04
  4. Step 4: Simplify right side
    81,119.16x = 3,471,581,337.96
  5. Step 5: Solve for x
    x = 3,471,581,337.96/81,119.16
  6. Step 6: Final answer
    x = 42,796.07

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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.