Home / 81,263.62-121,943.88-36,281.49

Finding the Fourth Proportional to 81,263.62, 121,943.88 and 36,281.49

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Solution

The fourth proportional to 81,263.62, 121,943.88 and 36,281.49 is: 54,443.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,263.62 : 121,943.88 = 36,281.49 : x
  2. Step 2: Convert to fraction form
    81,263.62/121,943.88 = 36,281.49/x
  3. Step 3: Cross multiply
    81,263.62x = 121,943.88 × 36,281.49
  4. Step 4: Simplify right side
    81,263.62x = 4,424,305,205.49
  5. Step 5: Solve for x
    x = 4,424,305,205.49/81,263.62
  6. Step 6: Final answer
    x = 54,443.86

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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.