Home / 56,139.97-84,146.19-18,691.24

Finding the Fourth Proportional to 56,139.97, 84,146.19 and 18,691.24

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Solution

The fourth proportional to 56,139.97, 84,146.19 and 18,691.24 is: 28,015.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,139.97 : 84,146.19 = 18,691.24 : x
  2. Step 2: Convert to fraction form
    56,139.97/84,146.19 = 18,691.24/x
  3. Step 3: Cross multiply
    56,139.97x = 84,146.19 × 18,691.24
  4. Step 4: Simplify right side
    56,139.97x = 1,572,796,632.38
  5. Step 5: Solve for x
    x = 1,572,796,632.38/56,139.97
  6. Step 6: Final answer
    x = 28,015.63

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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.