Home / 77,139.06-115,757.79-51,551.16

Finding the Fourth Proportional to 77,139.06, 115,757.79 and 51,551.16

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Solution

The fourth proportional to 77,139.06, 115,757.79 and 51,551.16 is: 77,359.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,139.06 : 115,757.79 = 51,551.16 : x
  2. Step 2: Convert to fraction form
    77,139.06/115,757.79 = 51,551.16/x
  3. Step 3: Cross multiply
    77,139.06x = 115,757.79 × 51,551.16
  4. Step 4: Simplify right side
    77,139.06x = 5,967,448,353.54
  5. Step 5: Solve for x
    x = 5,967,448,353.54/77,139.06
  6. Step 6: Final answer
    x = 77,359.62

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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.