Home / 54,416.40-81,538.20-40,419.60

Finding the Fourth Proportional to 54,416.40, 81,538.20 and 40,419.60

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Solution

The fourth proportional to 54,416.40, 81,538.20 and 40,419.60 is: 60,565.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,416.40 : 81,538.20 = 40,419.60 : x
  2. Step 2: Convert to fraction form
    54,416.40/81,538.20 = 40,419.60/x
  3. Step 3: Cross multiply
    54,416.40x = 81,538.20 × 40,419.60
  4. Step 4: Simplify right side
    54,416.40x = 3,295,741,428.72
  5. Step 5: Solve for x
    x = 3,295,741,428.72/54,416.40
  6. Step 6: Final answer
    x = 60,565.22

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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.