Home / 77,742.70-116,631-25,151.38

Finding the Fourth Proportional to 77,742.70, 116,631 and 25,151.38

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Solution

The fourth proportional to 77,742.70, 116,631 and 25,151.38 is: 37,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,742.70 : 116,631 = 25,151.38 : x
  2. Step 2: Convert to fraction form
    77,742.70/116,631 = 25,151.38/x
  3. Step 3: Cross multiply
    77,742.70x = 116,631 × 25,151.38
  4. Step 4: Simplify right side
    77,742.70x = 2,933,430,600.78
  5. Step 5: Solve for x
    x = 2,933,430,600.78/77,742.70
  6. Step 6: Final answer
    x = 37,732.55

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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.