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Finding the Fourth Proportional to 63,680.93, 87,880.08 and 39,821.57

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Solution

The fourth proportional to 63,680.93, 87,880.08 and 39,821.57 is: 54,954.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,680.93 : 87,880.08 = 39,821.57 : x
  2. Step 2: Convert to fraction form
    63,680.93/87,880.08 = 39,821.57/x
  3. Step 3: Cross multiply
    63,680.93x = 87,880.08 × 39,821.57
  4. Step 4: Simplify right side
    63,680.93x = 3,499,522,757.33
  5. Step 5: Solve for x
    x = 3,499,522,757.33/63,680.93
  6. Step 6: Final answer
    x = 54,954.01

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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.