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Finding the Fourth Proportional to 73,819.65, 101,871.09 and 40,285.65

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Solution

The fourth proportional to 73,819.65, 101,871.09 and 40,285.65 is: 55,594.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,819.65 : 101,871.09 = 40,285.65 : x
  2. Step 2: Convert to fraction form
    73,819.65/101,871.09 = 40,285.65/x
  3. Step 3: Cross multiply
    73,819.65x = 101,871.09 × 40,285.65
  4. Step 4: Simplify right side
    73,819.65x = 4,103,943,076.86
  5. Step 5: Solve for x
    x = 4,103,943,076.86/73,819.65
  6. Step 6: Final answer
    x = 55,594.18

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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.