Home / 80,318.04-120,321.54-38,794.20

Finding the Fourth Proportional to 80,318.04, 120,321.54 and 38,794.20

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Solution

The fourth proportional to 80,318.04, 120,321.54 and 38,794.20 is: 58,116.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,318.04 : 120,321.54 = 38,794.20 : x
  2. Step 2: Convert to fraction form
    80,318.04/120,321.54 = 38,794.20/x
  3. Step 3: Cross multiply
    80,318.04x = 120,321.54 × 38,794.20
  4. Step 4: Simplify right side
    80,318.04x = 4,667,777,887.07
  5. Step 5: Solve for x
    x = 4,667,777,887.07/80,318.04
  6. Step 6: Final answer
    x = 58,116.18

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1.5x scale

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.