Home / 45,270.25-67,905.87-13,680.57

Finding the Fourth Proportional to 45,270.25, 67,905.87 and 13,680.57

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Solution

The fourth proportional to 45,270.25, 67,905.87 and 13,680.57 is: 20,521.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,270.25 : 67,905.87 = 13,680.57 : x
  2. Step 2: Convert to fraction form
    45,270.25/67,905.87 = 13,680.57/x
  3. Step 3: Cross multiply
    45,270.25x = 67,905.87 × 13,680.57
  4. Step 4: Simplify right side
    45,270.25x = 928,991,007.95
  5. Step 5: Solve for x
    x = 928,991,007.95/45,270.25
  6. Step 6: Final answer
    x = 20,521.00

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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.