Home / 72,181.20-108,270.61-21,580.35

Finding the Fourth Proportional to 72,181.20, 108,270.61 and 21,580.35

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Solution

The fourth proportional to 72,181.20, 108,270.61 and 21,580.35 is: 32,370.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,181.20 : 108,270.61 = 21,580.35 : x
  2. Step 2: Convert to fraction form
    72,181.20/108,270.61 = 21,580.35/x
  3. Step 3: Cross multiply
    72,181.20x = 108,270.61 × 21,580.35
  4. Step 4: Simplify right side
    72,181.20x = 2,336,517,279.47
  5. Step 5: Solve for x
    x = 2,336,517,279.47/72,181.20
  6. Step 6: Final answer
    x = 32,370.16

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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.