Home / 77,406.61-106,722.25-50,134.51

Finding the Fourth Proportional to 77,406.61, 106,722.25 and 50,134.51

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Solution

The fourth proportional to 77,406.61, 106,722.25 and 50,134.51 is: 69,121.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,406.61 : 106,722.25 = 50,134.51 : x
  2. Step 2: Convert to fraction form
    77,406.61/106,722.25 = 50,134.51/x
  3. Step 3: Cross multiply
    77,406.61x = 106,722.25 × 50,134.51
  4. Step 4: Simplify right side
    77,406.61x = 5,350,467,709.85
  5. Step 5: Solve for x
    x = 5,350,467,709.85/77,406.61
  6. Step 6: Final answer
    x = 69,121.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.