Home / 83,989.13-115,910.46-55,700.28

Finding the Fourth Proportional to 83,989.13, 115,910.46 and 55,700.28

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Solution

The fourth proportional to 83,989.13, 115,910.46 and 55,700.28 is: 76,870.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,989.13 : 115,910.46 = 55,700.28 : x
  2. Step 2: Convert to fraction form
    83,989.13/115,910.46 = 55,700.28/x
  3. Step 3: Cross multiply
    83,989.13x = 115,910.46 × 55,700.28
  4. Step 4: Simplify right side
    83,989.13x = 6,456,245,076.93
  5. Step 5: Solve for x
    x = 6,456,245,076.93/83,989.13
  6. Step 6: Final answer
    x = 76,870.01

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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.