Home / 52,121.88-78,182.17-12,679.02

Finding the Fourth Proportional to 52,121.88, 78,182.17 and 12,679.02

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Solution

The fourth proportional to 52,121.88, 78,182.17 and 12,679.02 is: 19,018.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,121.88 : 78,182.17 = 12,679.02 : x
  2. Step 2: Convert to fraction form
    52,121.88/78,182.17 = 12,679.02/x
  3. Step 3: Cross multiply
    52,121.88x = 78,182.17 × 12,679.02
  4. Step 4: Simplify right side
    52,121.88x = 991,273,265.38
  5. Step 5: Solve for x
    x = 991,273,265.38/52,121.88
  6. Step 6: Final answer
    x = 19,018.37

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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.