Home / 77,850.28-106,655.27-74,934.70

Finding the Fourth Proportional to 77,850.28, 106,655.27 and 74,934.70

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Solution

The fourth proportional to 77,850.28, 106,655.27 and 74,934.70 is: 102,660.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,850.28 : 106,655.27 = 74,934.70 : x
  2. Step 2: Convert to fraction form
    77,850.28/106,655.27 = 74,934.70/x
  3. Step 3: Cross multiply
    77,850.28x = 106,655.27 × 74,934.70
  4. Step 4: Simplify right side
    77,850.28x = 7,992,180,660.87
  5. Step 5: Solve for x
    x = 7,992,180,660.87/77,850.28
  6. Step 6: Final answer
    x = 102,660.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.