Home / 72,181.11-108,290.11-30,047.18

Finding the Fourth Proportional to 72,181.11, 108,290.11 and 30,047.18

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Solution

The fourth proportional to 72,181.11, 108,290.11 and 30,047.18 is: 45,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,181.11 : 108,290.11 = 30,047.18 : x
  2. Step 2: Convert to fraction form
    72,181.11/108,290.11 = 30,047.18/x
  3. Step 3: Cross multiply
    72,181.11x = 108,290.11 × 30,047.18
  4. Step 4: Simplify right side
    72,181.11x = 3,253,812,081.55
  5. Step 5: Solve for x
    x = 3,253,812,081.55/72,181.11
  6. Step 6: Final answer
    x = 45,078.45

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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.