Home / 83,708.30-115,537.38-47,919

Finding the Fourth Proportional to 83,708.30, 115,537.38 and 47,919

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Solution

The fourth proportional to 83,708.30, 115,537.38 and 47,919 is: 66,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,708.30 : 115,537.38 = 47,919 : x
  2. Step 2: Convert to fraction form
    83,708.30/115,537.38 = 47,919/x
  3. Step 3: Cross multiply
    83,708.30x = 115,537.38 × 47,919
  4. Step 4: Simplify right side
    83,708.30x = 5,536,435,712.22
  5. Step 5: Solve for x
    x = 5,536,435,712.22/83,708.30
  6. Step 6: Final answer
    x = 66,139.63

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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.