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Finding the Fourth Proportional to 63,916.80, 95,874.30 and 28,856.40

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Solution

The fourth proportional to 63,916.80, 95,874.30 and 28,856.40 is: 43,284.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,916.80 : 95,874.30 = 28,856.40 : x
  2. Step 2: Convert to fraction form
    63,916.80/95,874.30 = 28,856.40/x
  3. Step 3: Cross multiply
    63,916.80x = 95,874.30 × 28,856.40
  4. Step 4: Simplify right side
    63,916.80x = 2,766,587,150.52
  5. Step 5: Solve for x
    x = 2,766,587,150.52/63,916.80
  6. Step 6: Final answer
    x = 43,284.19

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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.