Home / 66,780.87-92,160.09-38,105.20

Finding the Fourth Proportional to 66,780.87, 92,160.09 and 38,105.20

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Solution

The fourth proportional to 66,780.87, 92,160.09 and 38,105.20 is: 52,586.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,780.87 : 92,160.09 = 38,105.20 : x
  2. Step 2: Convert to fraction form
    66,780.87/92,160.09 = 38,105.20/x
  3. Step 3: Cross multiply
    66,780.87x = 92,160.09 × 38,105.20
  4. Step 4: Simplify right side
    66,780.87x = 3,511,778,470.94
  5. Step 5: Solve for x
    x = 3,511,778,470.94/66,780.87
  6. Step 6: Final answer
    x = 52,586.59

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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.