Home / 81,219.54-121,844.74-36,849.90

Finding the Fourth Proportional to 81,219.54, 121,844.74 and 36,849.90

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Solution

The fourth proportional to 81,219.54, 121,844.74 and 36,849.90 is: 55,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,219.54 : 121,844.74 = 36,849.90 : x
  2. Step 2: Convert to fraction form
    81,219.54/121,844.74 = 36,849.90/x
  3. Step 3: Cross multiply
    81,219.54x = 121,844.74 × 36,849.90
  4. Step 4: Simplify right side
    81,219.54x = 4,489,966,484.53
  5. Step 5: Solve for x
    x = 4,489,966,484.53/81,219.54
  6. Step 6: Final answer
    x = 55,281.85

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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.