Home / 81,144.25-121,610.34-58,730.40

Finding the Fourth Proportional to 81,144.25, 121,610.34 and 58,730.40

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Solution

The fourth proportional to 81,144.25, 121,610.34 and 58,730.40 is: 88,018.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,144.25 : 121,610.34 = 58,730.40 : x
  2. Step 2: Convert to fraction form
    81,144.25/121,610.34 = 58,730.40/x
  3. Step 3: Cross multiply
    81,144.25x = 121,610.34 × 58,730.40
  4. Step 4: Simplify right side
    81,144.25x = 7,142,223,912.34
  5. Step 5: Solve for x
    x = 7,142,223,912.34/81,144.25
  6. Step 6: Final answer
    x = 88,018.85

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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.