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Finding the Fourth Proportional to 83,053.76, 124,684.32 and 79,286.72

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Solution

The fourth proportional to 83,053.76, 124,684.32 and 79,286.72 is: 119,029.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,053.76 : 124,684.32 = 79,286.72 : x
  2. Step 2: Convert to fraction form
    83,053.76/124,684.32 = 79,286.72/x
  3. Step 3: Cross multiply
    83,053.76x = 124,684.32 × 79,286.72
  4. Step 4: Simplify right side
    83,053.76x = 9,885,810,768.23
  5. Step 5: Solve for x
    x = 9,885,810,768.23/83,053.76
  6. Step 6: Final answer
    x = 119,029.06

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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.