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Finding the Fourth Proportional to 63,872.87, 87,506.25 and 61,478.62

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Solution

The fourth proportional to 63,872.87, 87,506.25 and 61,478.62 is: 84,226.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,872.87 : 87,506.25 = 61,478.62 : x
  2. Step 2: Convert to fraction form
    63,872.87/87,506.25 = 61,478.62/x
  3. Step 3: Cross multiply
    63,872.87x = 87,506.25 × 61,478.62
  4. Step 4: Simplify right side
    63,872.87x = 5,379,763,412.45
  5. Step 5: Solve for x
    x = 5,379,763,412.45/63,872.87
  6. Step 6: Final answer
    x = 84,226.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.