Home / 83,891.45-115,775.20-48,083.78

Finding the Fourth Proportional to 83,891.45, 115,775.20 and 48,083.78

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Solution

The fourth proportional to 83,891.45, 115,775.20 and 48,083.78 is: 66,358.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,891.45 : 115,775.20 = 48,083.78 : x
  2. Step 2: Convert to fraction form
    83,891.45/115,775.20 = 48,083.78/x
  3. Step 3: Cross multiply
    83,891.45x = 115,775.20 × 48,083.78
  4. Step 4: Simplify right side
    83,891.45x = 5,566,909,415.48
  5. Step 5: Solve for x
    x = 5,566,909,415.48/83,891.45
  6. Step 6: Final answer
    x = 66,358.48

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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.