Home / 90,986.86-136,556.97-38,434.06

Finding the Fourth Proportional to 90,986.86, 136,556.97 and 38,434.06

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Solution

The fourth proportional to 90,986.86, 136,556.97 and 38,434.06 is: 57,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,986.86 : 136,556.97 = 38,434.06 : x
  2. Step 2: Convert to fraction form
    90,986.86/136,556.97 = 38,434.06/x
  3. Step 3: Cross multiply
    90,986.86x = 136,556.97 × 38,434.06
  4. Step 4: Simplify right side
    90,986.86x = 5,248,438,778.40
  5. Step 5: Solve for x
    x = 5,248,438,778.40/90,986.86
  6. Step 6: Final answer
    x = 57,683.48

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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.