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Finding the Fourth Proportional to 84,221.56, 126,361.50 and 56,253.88

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Solution

The fourth proportional to 84,221.56, 126,361.50 and 56,253.88 is: 84,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,221.56 : 126,361.50 = 56,253.88 : x
  2. Step 2: Convert to fraction form
    84,221.56/126,361.50 = 56,253.88/x
  3. Step 3: Cross multiply
    84,221.56x = 126,361.50 × 56,253.88
  4. Step 4: Simplify right side
    84,221.56x = 7,108,324,657.62
  5. Step 5: Solve for x
    x = 7,108,324,657.62/84,221.56
  6. Step 6: Final answer
    x = 84,400.30

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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.