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Finding the Fourth Proportional to 63,716.76, 87,918.78 and 35,421.72

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Solution

The fourth proportional to 63,716.76, 87,918.78 and 35,421.72 is: 48,876.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,716.76 : 87,918.78 = 35,421.72 : x
  2. Step 2: Convert to fraction form
    63,716.76/87,918.78 = 35,421.72/x
  3. Step 3: Cross multiply
    63,716.76x = 87,918.78 × 35,421.72
  4. Step 4: Simplify right side
    63,716.76x = 3,114,234,407.90
  5. Step 5: Solve for x
    x = 3,114,234,407.90/63,716.76
  6. Step 6: Final answer
    x = 48,876.22

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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.