Home / 45,231.15-67,856.45-18,922.35

Finding the Fourth Proportional to 45,231.15, 67,856.45 and 18,922.35

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Solution

The fourth proportional to 45,231.15, 67,856.45 and 18,922.35 is: 28,387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,231.15 : 67,856.45 = 18,922.35 : x
  2. Step 2: Convert to fraction form
    45,231.15/67,856.45 = 18,922.35/x
  3. Step 3: Cross multiply
    45,231.15x = 67,856.45 × 18,922.35
  4. Step 4: Simplify right side
    45,231.15x = 1,284,003,402.05
  5. Step 5: Solve for x
    x = 1,284,003,402.05/45,231.15
  6. Step 6: Final answer
    x = 28,387.59

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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.