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Finding the Fourth Proportional to 66,990, 92,446.56 and 41,854.08

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Solution

The fourth proportional to 66,990, 92,446.56 and 41,854.08 is: 57,758.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990 : 92,446.56 = 41,854.08 : x
  2. Step 2: Convert to fraction form
    66,990/92,446.56 = 41,854.08/x
  3. Step 3: Cross multiply
    66,990x = 92,446.56 × 41,854.08
  4. Step 4: Simplify right side
    66,990x = 3,869,265,717.96
  5. Step 5: Solve for x
    x = 3,869,265,717.96/66,990
  6. Step 6: Final answer
    x = 57,758.86

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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.