Home / 77,310.36-115,980-27,384.60

Finding the Fourth Proportional to 77,310.36, 115,980 and 27,384.60

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Solution

The fourth proportional to 77,310.36, 115,980 and 27,384.60 is: 41,082.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,310.36 : 115,980 = 27,384.60 : x
  2. Step 2: Convert to fraction form
    77,310.36/115,980 = 27,384.60/x
  3. Step 3: Cross multiply
    77,310.36x = 115,980 × 27,384.60
  4. Step 4: Simplify right side
    77,310.36x = 3,176,065,908
  5. Step 5: Solve for x
    x = 3,176,065,908/77,310.36
  6. Step 6: Final answer
    x = 41,082.02

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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.