Home / 54,457.96-81,691.98-21,180.55

Finding the Fourth Proportional to 54,457.96, 81,691.98 and 21,180.55

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Solution

The fourth proportional to 54,457.96, 81,691.98 and 21,180.55 is: 31,772.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,457.96 : 81,691.98 = 21,180.55 : x
  2. Step 2: Convert to fraction form
    54,457.96/81,691.98 = 21,180.55/x
  3. Step 3: Cross multiply
    54,457.96x = 81,691.98 × 21,180.55
  4. Step 4: Simplify right side
    54,457.96x = 1,730,281,066.99
  5. Step 5: Solve for x
    x = 1,730,281,066.99/54,457.96
  6. Step 6: Final answer
    x = 31,772.79

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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.