Home / 84,533.47-126,800.25-68,719.66

Finding the Fourth Proportional to 84,533.47, 126,800.25 and 68,719.66

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Solution

The fourth proportional to 84,533.47, 126,800.25 and 68,719.66 is: 103,079.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,533.47 : 126,800.25 = 68,719.66 : x
  2. Step 2: Convert to fraction form
    84,533.47/126,800.25 = 68,719.66/x
  3. Step 3: Cross multiply
    84,533.47x = 126,800.25 × 68,719.66
  4. Step 4: Simplify right side
    84,533.47x = 8,713,670,067.92
  5. Step 5: Solve for x
    x = 8,713,670,067.92/84,533.47
  6. Step 6: Final answer
    x = 103,079.53

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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.