Home / 66,531.78-99,815.90-33,211.62

Finding the Fourth Proportional to 66,531.78, 99,815.90 and 33,211.62

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Solution

The fourth proportional to 66,531.78, 99,815.90 and 33,211.62 is: 49,826.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,531.78 : 99,815.90 = 33,211.62 : x
  2. Step 2: Convert to fraction form
    66,531.78/99,815.90 = 33,211.62/x
  3. Step 3: Cross multiply
    66,531.78x = 99,815.90 × 33,211.62
  4. Step 4: Simplify right side
    66,531.78x = 3,315,047,574.70
  5. Step 5: Solve for x
    x = 3,315,047,574.70/66,531.78
  6. Step 6: Final answer
    x = 49,826.53

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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.