Home / 90,576.39-125,013.15-57,849.78

Finding the Fourth Proportional to 90,576.39, 125,013.15 and 57,849.78

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Solution

The fourth proportional to 90,576.39, 125,013.15 and 57,849.78 is: 79,844.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,576.39 : 125,013.15 = 57,849.78 : x
  2. Step 2: Convert to fraction form
    90,576.39/125,013.15 = 57,849.78/x
  3. Step 3: Cross multiply
    90,576.39x = 125,013.15 × 57,849.78
  4. Step 4: Simplify right side
    90,576.39x = 7,231,983,224.61
  5. Step 5: Solve for x
    x = 7,231,983,224.61/90,576.39
  6. Step 6: Final answer
    x = 79,844.02

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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.