Home / 83,757.65-115,633.28-55,160.40

Finding the Fourth Proportional to 83,757.65, 115,633.28 and 55,160.40

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Solution

The fourth proportional to 83,757.65, 115,633.28 and 55,160.40 is: 76,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,757.65 : 115,633.28 = 55,160.40 : x
  2. Step 2: Convert to fraction form
    83,757.65/115,633.28 = 55,160.40/x
  3. Step 3: Cross multiply
    83,757.65x = 115,633.28 × 55,160.40
  4. Step 4: Simplify right side
    83,757.65x = 6,378,378,239.36
  5. Step 5: Solve for x
    x = 6,378,378,239.36/83,757.65
  6. Step 6: Final answer
    x = 76,152.78

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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.