Home / 83,876.72-115,618.56-56,972.51

Finding the Fourth Proportional to 83,876.72, 115,618.56 and 56,972.51

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Solution

The fourth proportional to 83,876.72, 115,618.56 and 56,972.51 is: 78,532.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,876.72 : 115,618.56 = 56,972.51 : x
  2. Step 2: Convert to fraction form
    83,876.72/115,618.56 = 56,972.51/x
  3. Step 3: Cross multiply
    83,876.72x = 115,618.56 × 56,972.51
  4. Step 4: Simplify right side
    83,876.72x = 6,587,080,338.68
  5. Step 5: Solve for x
    x = 6,587,080,338.68/83,876.72
  6. Step 6: Final answer
    x = 78,532.88

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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.