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Finding the Fourth Proportional to 86,388.43, 119,211.43 and 48,660.31

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Solution

The fourth proportional to 86,388.43, 119,211.43 and 48,660.31 is: 67,148.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,388.43 : 119,211.43 = 48,660.31 : x
  2. Step 2: Convert to fraction form
    86,388.43/119,211.43 = 48,660.31/x
  3. Step 3: Cross multiply
    86,388.43x = 119,211.43 × 48,660.31
  4. Step 4: Simplify right side
    86,388.43x = 5,800,865,139.34
  5. Step 5: Solve for x
    x = 5,800,865,139.34/86,388.43
  6. Step 6: Final answer
    x = 67,148.63

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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.