Home / 45,181.17-67,711.28-20,215.89

Finding the Fourth Proportional to 45,181.17, 67,711.28 and 20,215.89

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Solution

The fourth proportional to 45,181.17, 67,711.28 and 20,215.89 is: 30,296.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,181.17 : 67,711.28 = 20,215.89 : x
  2. Step 2: Convert to fraction form
    45,181.17/67,711.28 = 20,215.89/x
  3. Step 3: Cross multiply
    45,181.17x = 67,711.28 × 20,215.89
  4. Step 4: Simplify right side
    45,181.17x = 1,368,843,687.16
  5. Step 5: Solve for x
    x = 1,368,843,687.16/45,181.17
  6. Step 6: Final answer
    x = 30,296.77

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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.