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Finding the Fourth Proportional to 63,643.17, 87,817.81 and 36,780.49

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Solution

The fourth proportional to 63,643.17, 87,817.81 and 36,780.49 is: 50,751.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,643.17 : 87,817.81 = 36,780.49 : x
  2. Step 2: Convert to fraction form
    63,643.17/87,817.81 = 36,780.49/x
  3. Step 3: Cross multiply
    63,643.17x = 87,817.81 × 36,780.49
  4. Step 4: Simplify right side
    63,643.17x = 3,229,982,082.53
  5. Step 5: Solve for x
    x = 3,229,982,082.53/63,643.17
  6. Step 6: Final answer
    x = 50,751.43

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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.