Home / 45,135.45-67,713.98-18,825.57

Finding the Fourth Proportional to 45,135.45, 67,713.98 and 18,825.57

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Solution

The fourth proportional to 45,135.45, 67,713.98 and 18,825.57 is: 28,242.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,135.45 : 67,713.98 = 18,825.57 : x
  2. Step 2: Convert to fraction form
    45,135.45/67,713.98 = 18,825.57/x
  3. Step 3: Cross multiply
    45,135.45x = 67,713.98 × 18,825.57
  4. Step 4: Simplify right side
    45,135.45x = 1,274,754,176.34
  5. Step 5: Solve for x
    x = 1,274,754,176.34/45,135.45
  6. Step 6: Final answer
    x = 28,242.86

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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.