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Finding the Fourth Proportional to 66,990.50, 92,447.25 and 41,854.58

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Solution

The fourth proportional to 66,990.50, 92,447.25 and 41,854.58 is: 57,759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,990.50 : 92,447.25 = 41,854.58 : x
  2. Step 2: Convert to fraction form
    66,990.50/92,447.25 = 41,854.58/x
  3. Step 3: Cross multiply
    66,990.50x = 92,447.25 × 41,854.58
  4. Step 4: Simplify right side
    66,990.50x = 3,869,340,820.91
  5. Step 5: Solve for x
    x = 3,869,340,820.91/66,990.50
  6. Step 6: Final answer
    x = 57,759.55

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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.