Home / 84,331.12-126,375.12-64,254.40

Finding the Fourth Proportional to 84,331.12, 126,375.12 and 64,254.40

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Solution

The fourth proportional to 84,331.12, 126,375.12 and 64,254.40 is: 96,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,331.12 : 126,375.12 = 64,254.40 : x
  2. Step 2: Convert to fraction form
    84,331.12/126,375.12 = 64,254.40/x
  3. Step 3: Cross multiply
    84,331.12x = 126,375.12 × 64,254.40
  4. Step 4: Simplify right side
    84,331.12x = 8,120,157,510.53
  5. Step 5: Solve for x
    x = 8,120,157,510.53/84,331.12
  6. Step 6: Final answer
    x = 96,288.98

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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.