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Finding the Fourth Proportional to 63,917.80, 95,875.80 and 28,857.40

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Solution

The fourth proportional to 63,917.80, 95,875.80 and 28,857.40 is: 43,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,917.80 : 95,875.80 = 28,857.40 : x
  2. Step 2: Convert to fraction form
    63,917.80/95,875.80 = 28,857.40/x
  3. Step 3: Cross multiply
    63,917.80x = 95,875.80 × 28,857.40
  4. Step 4: Simplify right side
    63,917.80x = 2,766,726,310.92
  5. Step 5: Solve for x
    x = 2,766,726,310.92/63,917.80
  6. Step 6: Final answer
    x = 43,285.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.