Home / 45,157.80-67,743-18,856.56

Finding the Fourth Proportional to 45,157.80, 67,743 and 18,856.56

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Solution

The fourth proportional to 45,157.80, 67,743 and 18,856.56 is: 28,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,157.80 : 67,743 = 18,856.56 : x
  2. Step 2: Convert to fraction form
    45,157.80/67,743 = 18,856.56/x
  3. Step 3: Cross multiply
    45,157.80x = 67,743 × 18,856.56
  4. Step 4: Simplify right side
    45,157.80x = 1,277,399,944.08
  5. Step 5: Solve for x
    x = 1,277,399,944.08/45,157.80
  6. Step 6: Final answer
    x = 28,287.47

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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.