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Finding the Fourth Proportional to 86,311.89, 119,105.87 and 48,070.76

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Solution

The fourth proportional to 86,311.89, 119,105.87 and 48,070.76 is: 66,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,311.89 : 119,105.87 = 48,070.76 : x
  2. Step 2: Convert to fraction form
    86,311.89/119,105.87 = 48,070.76/x
  3. Step 3: Cross multiply
    86,311.89x = 119,105.87 × 48,070.76
  4. Step 4: Simplify right side
    86,311.89x = 5,725,508,855.48
  5. Step 5: Solve for x
    x = 5,725,508,855.48/86,311.89
  6. Step 6: Final answer
    x = 66,335.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.