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Finding the Fourth Proportional to 84,320.92, 126,254.72 and 64,234.72

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Solution

The fourth proportional to 84,320.92, 126,254.72 and 64,234.72 is: 96,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,320.92 : 126,254.72 = 64,234.72 : x
  2. Step 2: Convert to fraction form
    84,320.92/126,254.72 = 64,234.72/x
  3. Step 3: Cross multiply
    84,320.92x = 126,254.72 × 64,234.72
  4. Step 4: Simplify right side
    84,320.92x = 8,109,936,587.88
  5. Step 5: Solve for x
    x = 8,109,936,587.88/84,320.92
  6. Step 6: Final answer
    x = 96,179.41

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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.