Home / 54,259.20-81,230.40-38,707.20

Finding the Fourth Proportional to 54,259.20, 81,230.40 and 38,707.20

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Solution

The fourth proportional to 54,259.20, 81,230.40 and 38,707.20 is: 57,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,259.20 : 81,230.40 = 38,707.20 : x
  2. Step 2: Convert to fraction form
    54,259.20/81,230.40 = 38,707.20/x
  3. Step 3: Cross multiply
    54,259.20x = 81,230.40 × 38,707.20
  4. Step 4: Simplify right side
    54,259.20x = 3,144,201,338.88
  5. Step 5: Solve for x
    x = 3,144,201,338.88/54,259.20
  6. Step 6: Final answer
    x = 57,947.80

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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.