Home / 100,769.45-139,067.73-57,762.27

Finding the Fourth Proportional to 100,769.45, 139,067.73 and 57,762.27

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Solution

The fourth proportional to 100,769.45, 139,067.73 and 57,762.27 is: 79,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,769.45 : 139,067.73 = 57,762.27 : x
  2. Step 2: Convert to fraction form
    100,769.45/139,067.73 = 57,762.27/x
  3. Step 3: Cross multiply
    100,769.45x = 139,067.73 × 57,762.27
  4. Step 4: Simplify right side
    100,769.45x = 8,032,867,568.46
  5. Step 5: Solve for x
    x = 8,032,867,568.46/100,769.45
  6. Step 6: Final answer
    x = 79,715.30

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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.