Home / 54,298.12-81,427.20-18,750.42

Finding the Fourth Proportional to 54,298.12, 81,427.20 and 18,750.42

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Solution

The fourth proportional to 54,298.12, 81,427.20 and 18,750.42 is: 28,118.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,298.12 : 81,427.20 = 18,750.42 : x
  2. Step 2: Convert to fraction form
    54,298.12/81,427.20 = 18,750.42/x
  3. Step 3: Cross multiply
    54,298.12x = 81,427.20 × 18,750.42
  4. Step 4: Simplify right side
    54,298.12x = 1,526,794,199.42
  5. Step 5: Solve for x
    x = 1,526,794,199.42/54,298.12
  6. Step 6: Final answer
    x = 28,118.73

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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.