Home / 81,049.31-121,475.47-57,363.74

Finding the Fourth Proportional to 81,049.31, 121,475.47 and 57,363.74

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Solution

The fourth proportional to 81,049.31, 121,475.47 and 57,363.74 is: 85,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,049.31 : 121,475.47 = 57,363.74 : x
  2. Step 2: Convert to fraction form
    81,049.31/121,475.47 = 57,363.74/x
  3. Step 3: Cross multiply
    81,049.31x = 121,475.47 × 57,363.74
  4. Step 4: Simplify right side
    81,049.31x = 6,968,287,934.40
  5. Step 5: Solve for x
    x = 6,968,287,934.40/81,049.31
  6. Step 6: Final answer
    x = 85,975.91

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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.