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Finding the Fourth Proportional to 68,641.77, 94,780.76 and 55,169.85

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Solution

The fourth proportional to 68,641.77, 94,780.76 and 55,169.85 is: 76,178.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,641.77 : 94,780.76 = 55,169.85 : x
  2. Step 2: Convert to fraction form
    68,641.77/94,780.76 = 55,169.85/x
  3. Step 3: Cross multiply
    68,641.77x = 94,780.76 × 55,169.85
  4. Step 4: Simplify right side
    68,641.77x = 5,229,040,036.24
  5. Step 5: Solve for x
    x = 5,229,040,036.24/68,641.77
  6. Step 6: Final answer
    x = 76,178.69

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1.5x scale

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.