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Finding the Fourth Proportional to 63,428.13, 87,389.87 and 41,879.48

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Solution

The fourth proportional to 63,428.13, 87,389.87 and 41,879.48 is: 57,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,428.13 : 87,389.87 = 41,879.48 : x
  2. Step 2: Convert to fraction form
    63,428.13/87,389.87 = 41,879.48/x
  3. Step 3: Cross multiply
    63,428.13x = 87,389.87 × 41,879.48
  4. Step 4: Simplify right side
    63,428.13x = 3,659,841,666.52
  5. Step 5: Solve for x
    x = 3,659,841,666.52/63,428.13
  6. Step 6: Final answer
    x = 57,700.61

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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.