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Finding the Fourth Proportional to 63,901.76, 88,199.45 and 39,720.96

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Solution

The fourth proportional to 63,901.76, 88,199.45 and 39,720.96 is: 54,824.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,901.76 : 88,199.45 = 39,720.96 : x
  2. Step 2: Convert to fraction form
    63,901.76/88,199.45 = 39,720.96/x
  3. Step 3: Cross multiply
    63,901.76x = 88,199.45 × 39,720.96
  4. Step 4: Simplify right side
    63,901.76x = 3,503,366,626.87
  5. Step 5: Solve for x
    x = 3,503,366,626.87/63,901.76
  6. Step 6: Final answer
    x = 54,824.26

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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.