Home / 90,963.24-136,459.43-38,380.47

Finding the Fourth Proportional to 90,963.24, 136,459.43 and 38,380.47

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Solution

The fourth proportional to 90,963.24, 136,459.43 and 38,380.47 is: 57,576.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,963.24 : 136,459.43 = 38,380.47 : x
  2. Step 2: Convert to fraction form
    90,963.24/136,459.43 = 38,380.47/x
  3. Step 3: Cross multiply
    90,963.24x = 136,459.43 × 38,380.47
  4. Step 4: Simplify right side
    90,963.24x = 5,237,376,867.43
  5. Step 5: Solve for x
    x = 5,237,376,867.43/90,963.24
  6. Step 6: Final answer
    x = 57,576.85

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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.