Home / 81,429.70-122,144.55-53,436.10

Finding the Fourth Proportional to 81,429.70, 122,144.55 and 53,436.10

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Solution

The fourth proportional to 81,429.70, 122,144.55 and 53,436.10 is: 80,154.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,429.70 : 122,144.55 = 53,436.10 : x
  2. Step 2: Convert to fraction form
    81,429.70/122,144.55 = 53,436.10/x
  3. Step 3: Cross multiply
    81,429.70x = 122,144.55 × 53,436.10
  4. Step 4: Simplify right side
    81,429.70x = 6,526,928,388.26
  5. Step 5: Solve for x
    x = 6,526,928,388.26/81,429.70
  6. Step 6: Final answer
    x = 80,154.15

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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.