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Finding the Fourth Proportional to 63,680.80, 87,791.68 and 50,803.76

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Solution

The fourth proportional to 63,680.80, 87,791.68 and 50,803.76 is: 70,039.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,680.80 : 87,791.68 = 50,803.76 : x
  2. Step 2: Convert to fraction form
    63,680.80/87,791.68 = 50,803.76/x
  3. Step 3: Cross multiply
    63,680.80x = 87,791.68 × 50,803.76
  4. Step 4: Simplify right side
    63,680.80x = 4,460,147,440.72
  5. Step 5: Solve for x
    x = 4,460,147,440.72/63,680.80
  6. Step 6: Final answer
    x = 70,039.12

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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.