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Finding the Fourth Proportional to 72,170.30, 108,181.62 and 36,565.65

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Solution

The fourth proportional to 72,170.30, 108,181.62 and 36,565.65 is: 54,811.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.30 : 108,181.62 = 36,565.65 : x
  2. Step 2: Convert to fraction form
    72,170.30/108,181.62 = 36,565.65/x
  3. Step 3: Cross multiply
    72,170.30x = 108,181.62 × 36,565.65
  4. Step 4: Simplify right side
    72,170.30x = 3,955,731,253.35
  5. Step 5: Solve for x
    x = 3,955,731,253.35/72,170.30
  6. Step 6: Final answer
    x = 54,811.07

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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.