Home / 83,780.78-125,680.32-36,363.28

Finding the Fourth Proportional to 83,780.78, 125,680.32 and 36,363.28

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Solution

The fourth proportional to 83,780.78, 125,680.32 and 36,363.28 is: 54,548.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,780.78 : 125,680.32 = 36,363.28 : x
  2. Step 2: Convert to fraction form
    83,780.78/125,680.32 = 36,363.28/x
  3. Step 3: Cross multiply
    83,780.78x = 125,680.32 × 36,363.28
  4. Step 4: Simplify right side
    83,780.78x = 4,570,148,666.65
  5. Step 5: Solve for x
    x = 4,570,148,666.65/83,780.78
  6. Step 6: Final answer
    x = 54,548.89

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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.