Home / 45,243.55-67,837.99-20,278.95

Finding the Fourth Proportional to 45,243.55, 67,837.99 and 20,278.95

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Solution

The fourth proportional to 45,243.55, 67,837.99 and 20,278.95 is: 30,406.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,243.55 : 67,837.99 = 20,278.95 : x
  2. Step 2: Convert to fraction form
    45,243.55/67,837.99 = 20,278.95/x
  3. Step 3: Cross multiply
    45,243.55x = 67,837.99 × 20,278.95
  4. Step 4: Simplify right side
    45,243.55x = 1,375,683,207.31
  5. Step 5: Solve for x
    x = 1,375,683,207.31/45,243.55
  6. Step 6: Final answer
    x = 30,406.17

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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.