Home / 83,110.27-124,665.41-20,780.77

Finding the Fourth Proportional to 83,110.27, 124,665.41 and 20,780.77

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Solution

The fourth proportional to 83,110.27, 124,665.41 and 20,780.77 is: 31,171.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,110.27 : 124,665.41 = 20,780.77 : x
  2. Step 2: Convert to fraction form
    83,110.27/124,665.41 = 20,780.77/x
  3. Step 3: Cross multiply
    83,110.27x = 124,665.41 × 20,780.77
  4. Step 4: Simplify right side
    83,110.27x = 2,590,643,212.17
  5. Step 5: Solve for x
    x = 2,590,643,212.17/83,110.27
  6. Step 6: Final answer
    x = 31,171.16

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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.