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Finding the Fourth Proportional to 80,445.64, 111,063.88 and 62,506.80

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Solution

The fourth proportional to 80,445.64, 111,063.88 and 62,506.80 is: 86,297.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,445.64 : 111,063.88 = 62,506.80 : x
  2. Step 2: Convert to fraction form
    80,445.64/111,063.88 = 62,506.80/x
  3. Step 3: Cross multiply
    80,445.64x = 111,063.88 × 62,506.80
  4. Step 4: Simplify right side
    80,445.64x = 6,942,247,734.38
  5. Step 5: Solve for x
    x = 6,942,247,734.38/80,445.64
  6. Step 6: Final answer
    x = 86,297.38

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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.