Home / 81,816.18-122,710.60-22,657.84

Finding the Fourth Proportional to 81,816.18, 122,710.60 and 22,657.84

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Solution

The fourth proportional to 81,816.18, 122,710.60 and 22,657.84 is: 33,982.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,816.18 : 122,710.60 = 22,657.84 : x
  2. Step 2: Convert to fraction form
    81,816.18/122,710.60 = 22,657.84/x
  3. Step 3: Cross multiply
    81,816.18x = 122,710.60 × 22,657.84
  4. Step 4: Simplify right side
    81,816.18x = 2,780,357,141.10
  5. Step 5: Solve for x
    x = 2,780,357,141.10/81,816.18
  6. Step 6: Final answer
    x = 33,982.97

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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.