Home / 91,439.91-126,181.98-51,145.88

Finding the Fourth Proportional to 91,439.91, 126,181.98 and 51,145.88

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Solution

The fourth proportional to 91,439.91, 126,181.98 and 51,145.88 is: 70,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,439.91 : 126,181.98 = 51,145.88 : x
  2. Step 2: Convert to fraction form
    91,439.91/126,181.98 = 51,145.88/x
  3. Step 3: Cross multiply
    91,439.91x = 126,181.98 × 51,145.88
  4. Step 4: Simplify right side
    91,439.91x = 6,453,687,776.33
  5. Step 5: Solve for x
    x = 6,453,687,776.33/91,439.91
  6. Step 6: Final answer
    x = 70,578.46

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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.