Home / 81,655.56-122,454.18-28,333.80

Finding the Fourth Proportional to 81,655.56, 122,454.18 and 28,333.80

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Solution

The fourth proportional to 81,655.56, 122,454.18 and 28,333.80 is: 42,490.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,655.56 : 122,454.18 = 28,333.80 : x
  2. Step 2: Convert to fraction form
    81,655.56/122,454.18 = 28,333.80/x
  3. Step 3: Cross multiply
    81,655.56x = 122,454.18 × 28,333.80
  4. Step 4: Simplify right side
    81,655.56x = 3,469,592,245.28
  5. Step 5: Solve for x
    x = 3,469,592,245.28/81,655.56
  6. Step 6: Final answer
    x = 42,490.58

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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.