Home / 81,972.81-122,934.92-35,214.75

Finding the Fourth Proportional to 81,972.81, 122,934.92 and 35,214.75

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Solution

The fourth proportional to 81,972.81, 122,934.92 and 35,214.75 is: 52,811.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972.81 : 122,934.92 = 35,214.75 : x
  2. Step 2: Convert to fraction form
    81,972.81/122,934.92 = 35,214.75/x
  3. Step 3: Cross multiply
    81,972.81x = 122,934.92 × 35,214.75
  4. Step 4: Simplify right side
    81,972.81x = 4,329,122,298.00
  5. Step 5: Solve for x
    x = 4,329,122,298.00/81,972.81
  6. Step 6: Final answer
    x = 52,811.69

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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.