Home / 45,853.78-68,780.94-20,876.36

Finding the Fourth Proportional to 45,853.78, 68,780.94 and 20,876.36

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Solution

The fourth proportional to 45,853.78, 68,780.94 and 20,876.36 is: 31,314.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,853.78 : 68,780.94 = 20,876.36 : x
  2. Step 2: Convert to fraction form
    45,853.78/68,780.94 = 20,876.36/x
  3. Step 3: Cross multiply
    45,853.78x = 68,780.94 × 20,876.36
  4. Step 4: Simplify right side
    45,853.78x = 1,435,895,664.58
  5. Step 5: Solve for x
    x = 1,435,895,664.58/45,853.78
  6. Step 6: Final answer
    x = 31,314.66

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1.5x scale

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.