Home / 81,338.16-122,018.64-25,183.08

Finding the Fourth Proportional to 81,338.16, 122,018.64 and 25,183.08

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Solution

The fourth proportional to 81,338.16, 122,018.64 and 25,183.08 is: 37,778.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,338.16 : 122,018.64 = 25,183.08 : x
  2. Step 2: Convert to fraction form
    81,338.16/122,018.64 = 25,183.08/x
  3. Step 3: Cross multiply
    81,338.16x = 122,018.64 × 25,183.08
  4. Step 4: Simplify right side
    81,338.16x = 3,072,805,172.61
  5. Step 5: Solve for x
    x = 3,072,805,172.61/81,338.16
  6. Step 6: Final answer
    x = 37,778.15

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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.