Home / 80,135.55-120,262.38-38,015.76

Finding the Fourth Proportional to 80,135.55, 120,262.38 and 38,015.76

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Solution

The fourth proportional to 80,135.55, 120,262.38 and 38,015.76 is: 57,051.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,135.55 : 120,262.38 = 38,015.76 : x
  2. Step 2: Convert to fraction form
    80,135.55/120,262.38 = 38,015.76/x
  3. Step 3: Cross multiply
    80,135.55x = 120,262.38 × 38,015.76
  4. Step 4: Simplify right side
    80,135.55x = 4,571,865,775.11
  5. Step 5: Solve for x
    x = 4,571,865,775.11/80,135.55
  6. Step 6: Final answer
    x = 57,051.66

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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.