Home / 85,422.75-128,151.97-25,451.11

Finding the Fourth Proportional to 85,422.75, 128,151.97 and 25,451.11

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Solution

The fourth proportional to 85,422.75, 128,151.97 and 25,451.11 is: 38,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,422.75 : 128,151.97 = 25,451.11 : x
  2. Step 2: Convert to fraction form
    85,422.75/128,151.97 = 25,451.11/x
  3. Step 3: Cross multiply
    85,422.75x = 128,151.97 × 25,451.11
  4. Step 4: Simplify right side
    85,422.75x = 3,261,610,124.91
  5. Step 5: Solve for x
    x = 3,261,610,124.91/85,422.75
  6. Step 6: Final answer
    x = 38,181.98

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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.