Home / 77,147.10-115,769.79-51,559.20

Finding the Fourth Proportional to 77,147.10, 115,769.79 and 51,559.20

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Solution

The fourth proportional to 77,147.10, 115,769.79 and 51,559.20 is: 77,371.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,147.10 : 115,769.79 = 51,559.20 : x
  2. Step 2: Convert to fraction form
    77,147.10/115,769.79 = 51,559.20/x
  3. Step 3: Cross multiply
    77,147.10x = 115,769.79 × 51,559.20
  4. Step 4: Simplify right side
    77,147.10x = 5,968,997,756.57
  5. Step 5: Solve for x
    x = 5,968,997,756.57/77,147.10
  6. Step 6: Final answer
    x = 77,371.64

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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.