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Finding the Fourth Proportional to 64,456.56, 96,689.50 and 26,978.92

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Solution

The fourth proportional to 64,456.56, 96,689.50 and 26,978.92 is: 40,470.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,456.56 : 96,689.50 = 26,978.92 : x
  2. Step 2: Convert to fraction form
    64,456.56/96,689.50 = 26,978.92/x
  3. Step 3: Cross multiply
    64,456.56x = 96,689.50 × 26,978.92
  4. Step 4: Simplify right side
    64,456.56x = 2,608,578,520.05
  5. Step 5: Solve for x
    x = 2,608,578,520.05/64,456.56
  6. Step 6: Final answer
    x = 40,470.33

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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.