Home / 81,821.67-122,732.31-22,657.14

Finding the Fourth Proportional to 81,821.67, 122,732.31 and 22,657.14

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Solution

The fourth proportional to 81,821.67, 122,732.31 and 22,657.14 is: 33,985.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,821.67 : 122,732.31 = 22,657.14 : x
  2. Step 2: Convert to fraction form
    81,821.67/122,732.31 = 22,657.14/x
  3. Step 3: Cross multiply
    81,821.67x = 122,732.31 × 22,657.14
  4. Step 4: Simplify right side
    81,821.67x = 2,780,763,130.19
  5. Step 5: Solve for x
    x = 2,780,763,130.19/81,821.67
  6. Step 6: Final answer
    x = 33,985.66

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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.