Home / 54,354.20-81,539.40-19,290.92

Finding the Fourth Proportional to 54,354.20, 81,539.40 and 19,290.92

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Solution

The fourth proportional to 54,354.20, 81,539.40 and 19,290.92 is: 28,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,354.20 : 81,539.40 = 19,290.92 : x
  2. Step 2: Convert to fraction form
    54,354.20/81,539.40 = 19,290.92/x
  3. Step 3: Cross multiply
    54,354.20x = 81,539.40 × 19,290.92
  4. Step 4: Simplify right side
    54,354.20x = 1,572,970,042.25
  5. Step 5: Solve for x
    x = 1,572,970,042.25/54,354.20
  6. Step 6: Final answer
    x = 28,939.25

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1.5x scale

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.