Home / 84,395.76-126,426.66-68,618.40

Finding the Fourth Proportional to 84,395.76, 126,426.66 and 68,618.40

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Solution

The fourth proportional to 84,395.76, 126,426.66 and 68,618.40 is: 102,791.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,395.76 : 126,426.66 = 68,618.40 : x
  2. Step 2: Convert to fraction form
    84,395.76/126,426.66 = 68,618.40/x
  3. Step 3: Cross multiply
    84,395.76x = 126,426.66 × 68,618.40
  4. Step 4: Simplify right side
    84,395.76x = 8,675,195,126.54
  5. Step 5: Solve for x
    x = 8,675,195,126.54/84,395.76
  6. Step 6: Final answer
    x = 102,791.84

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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.