Home / 77,839.22-107,380.83-74,821.46

Finding the Fourth Proportional to 77,839.22, 107,380.83 and 74,821.46

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Solution

The fourth proportional to 77,839.22, 107,380.83 and 74,821.46 is: 103,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,839.22 : 107,380.83 = 74,821.46 : x
  2. Step 2: Convert to fraction form
    77,839.22/107,380.83 = 74,821.46/x
  3. Step 3: Cross multiply
    77,839.22x = 107,380.83 × 74,821.46
  4. Step 4: Simplify right side
    77,839.22x = 8,034,390,395.21
  5. Step 5: Solve for x
    x = 8,034,390,395.21/77,839.22
  6. Step 6: Final answer
    x = 103,217.77

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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.