Home / 91,662.10-126,257.09-64,757.90

Finding the Fourth Proportional to 91,662.10, 126,257.09 and 64,757.90

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Solution

The fourth proportional to 91,662.10, 126,257.09 and 64,757.90 is: 89,198.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,662.10 : 126,257.09 = 64,757.90 : x
  2. Step 2: Convert to fraction form
    91,662.10/126,257.09 = 64,757.90/x
  3. Step 3: Cross multiply
    91,662.10x = 126,257.09 × 64,757.90
  4. Step 4: Simplify right side
    91,662.10x = 8,176,144,000.36
  5. Step 5: Solve for x
    x = 8,176,144,000.36/91,662.10
  6. Step 6: Final answer
    x = 89,198.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.