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Finding the Fourth Proportional to 67,879.08, 101,858.28 and 28,432.86

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Solution

The fourth proportional to 67,879.08, 101,858.28 and 28,432.86 is: 42,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,879.08 : 101,858.28 = 28,432.86 : x
  2. Step 2: Convert to fraction form
    67,879.08/101,858.28 = 28,432.86/x
  3. Step 3: Cross multiply
    67,879.08x = 101,858.28 × 28,432.86
  4. Step 4: Simplify right side
    67,879.08x = 2,896,122,215.08
  5. Step 5: Solve for x
    x = 2,896,122,215.08/67,879.08
  6. Step 6: Final answer
    x = 42,665.90

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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.