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Finding the Fourth Proportional to 66,587.87, 91,890.71 and 36,373.20

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Solution

The fourth proportional to 66,587.87, 91,890.71 and 36,373.20 is: 50,194.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,587.87 : 91,890.71 = 36,373.20 : x
  2. Step 2: Convert to fraction form
    66,587.87/91,890.71 = 36,373.20/x
  3. Step 3: Cross multiply
    66,587.87x = 91,890.71 × 36,373.20
  4. Step 4: Simplify right side
    66,587.87x = 3,342,359,172.97
  5. Step 5: Solve for x
    x = 3,342,359,172.97/66,587.87
  6. Step 6: Final answer
    x = 50,194.72

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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.