Home / 89,814.74-134,634.09-76,517.78

Finding the Fourth Proportional to 89,814.74, 134,634.09 and 76,517.78

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Solution

The fourth proportional to 89,814.74, 134,634.09 and 76,517.78 is: 114,701.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,814.74 : 134,634.09 = 76,517.78 : x
  2. Step 2: Convert to fraction form
    89,814.74/134,634.09 = 76,517.78/x
  3. Step 3: Cross multiply
    89,814.74x = 134,634.09 × 76,517.78
  4. Step 4: Simplify right side
    89,814.74x = 10,301,901,679.12
  5. Step 5: Solve for x
    x = 10,301,901,679.12/89,814.74
  6. Step 6: Final answer
    x = 114,701.68

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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.