Home / 54,125.47-81,188.31-20,861.20

Finding the Fourth Proportional to 54,125.47, 81,188.31 and 20,861.20

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Solution

The fourth proportional to 54,125.47, 81,188.31 and 20,861.20 is: 31,291.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,125.47 : 81,188.31 = 20,861.20 : x
  2. Step 2: Convert to fraction form
    54,125.47/81,188.31 = 20,861.20/x
  3. Step 3: Cross multiply
    54,125.47x = 81,188.31 × 20,861.20
  4. Step 4: Simplify right side
    54,125.47x = 1,693,685,572.57
  5. Step 5: Solve for x
    x = 1,693,685,572.57/54,125.47
  6. Step 6: Final answer
    x = 31,291.84

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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.