Home / 81,897.73-122,846.18-31,982.89

Finding the Fourth Proportional to 81,897.73, 122,846.18 and 31,982.89

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Solution

The fourth proportional to 81,897.73, 122,846.18 and 31,982.89 is: 47,974.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,897.73 : 122,846.18 = 31,982.89 : x
  2. Step 2: Convert to fraction form
    81,897.73/122,846.18 = 31,982.89/x
  3. Step 3: Cross multiply
    81,897.73x = 122,846.18 × 31,982.89
  4. Step 4: Simplify right side
    81,897.73x = 3,928,975,701.95
  5. Step 5: Solve for x
    x = 3,928,975,701.95/81,897.73
  6. Step 6: Final answer
    x = 47,974.17

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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.