Home / 54,113.31-81,143.22-31,629.66

Finding the Fourth Proportional to 54,113.31, 81,143.22 and 31,629.66

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Solution

The fourth proportional to 54,113.31, 81,143.22 and 31,629.66 is: 47,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,113.31 : 81,143.22 = 31,629.66 : x
  2. Step 2: Convert to fraction form
    54,113.31/81,143.22 = 31,629.66/x
  3. Step 3: Cross multiply
    54,113.31x = 81,143.22 × 31,629.66
  4. Step 4: Simplify right side
    54,113.31x = 2,566,532,459.91
  5. Step 5: Solve for x
    x = 2,566,532,459.91/54,113.31
  6. Step 6: Final answer
    x = 47,428.86

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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.