Home / 84,375.20-126,708.60-45,009.20

Finding the Fourth Proportional to 84,375.20, 126,708.60 and 45,009.20

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Solution

The fourth proportional to 84,375.20, 126,708.60 and 45,009.20 is: 67,591.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,375.20 : 126,708.60 = 45,009.20 : x
  2. Step 2: Convert to fraction form
    84,375.20/126,708.60 = 45,009.20/x
  3. Step 3: Cross multiply
    84,375.20x = 126,708.60 × 45,009.20
  4. Step 4: Simplify right side
    84,375.20x = 5,703,052,719.12
  5. Step 5: Solve for x
    x = 5,703,052,719.12/84,375.20
  6. Step 6: Final answer
    x = 67,591.58

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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.