Home / 54,219.60-81,321.43-31,740.66

Finding the Fourth Proportional to 54,219.60, 81,321.43 and 31,740.66

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Solution

The fourth proportional to 54,219.60, 81,321.43 and 31,740.66 is: 47,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,219.60 : 81,321.43 = 31,740.66 : x
  2. Step 2: Convert to fraction form
    54,219.60/81,321.43 = 31,740.66/x
  3. Step 3: Cross multiply
    54,219.60x = 81,321.43 × 31,740.66
  4. Step 4: Simplify right side
    54,219.60x = 2,581,195,885.14
  5. Step 5: Solve for x
    x = 2,581,195,885.14/54,219.60
  6. Step 6: Final answer
    x = 47,606.32

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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.