Home / 81,688.57-122,538.96-22,523.74

Finding the Fourth Proportional to 81,688.57, 122,538.96 and 22,523.74

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Solution

The fourth proportional to 81,688.57, 122,538.96 and 22,523.74 is: 33,787.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688.57 : 122,538.96 = 22,523.74 : x
  2. Step 2: Convert to fraction form
    81,688.57/122,538.96 = 22,523.74/x
  3. Step 3: Cross multiply
    81,688.57x = 122,538.96 × 22,523.74
  4. Step 4: Simplify right side
    81,688.57x = 2,760,035,368.56
  5. Step 5: Solve for x
    x = 2,760,035,368.56/81,688.57
  6. Step 6: Final answer
    x = 33,787.29

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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.