Home / 80,129.55-120,253.38-38,009.76

Finding the Fourth Proportional to 80,129.55, 120,253.38 and 38,009.76

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Solution

The fourth proportional to 80,129.55, 120,253.38 and 38,009.76 is: 57,042.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,129.55 : 120,253.38 = 38,009.76 : x
  2. Step 2: Convert to fraction form
    80,129.55/120,253.38 = 38,009.76/x
  3. Step 3: Cross multiply
    80,129.55x = 120,253.38 × 38,009.76
  4. Step 4: Simplify right side
    80,129.55x = 4,570,801,840.21
  5. Step 5: Solve for x
    x = 4,570,801,840.21/80,129.55
  6. Step 6: Final answer
    x = 57,042.65

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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.