Home / 81,883.71-122,821.74-31,972.95

Finding the Fourth Proportional to 81,883.71, 122,821.74 and 31,972.95

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Solution

The fourth proportional to 81,883.71, 122,821.74 and 31,972.95 is: 47,957.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,883.71 : 122,821.74 = 31,972.95 : x
  2. Step 2: Convert to fraction form
    81,883.71/122,821.74 = 31,972.95/x
  3. Step 3: Cross multiply
    81,883.71x = 122,821.74 × 31,972.95
  4. Step 4: Simplify right side
    81,883.71x = 3,926,973,351.93
  5. Step 5: Solve for x
    x = 3,926,973,351.93/81,883.71
  6. Step 6: Final answer
    x = 47,957.93

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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.