Home / 83,515.69-125,142.14-64,586.66

Finding the Fourth Proportional to 83,515.69, 125,142.14 and 64,586.66

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Solution

The fourth proportional to 83,515.69, 125,142.14 and 64,586.66 is: 96,778.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,515.69 : 125,142.14 = 64,586.66 : x
  2. Step 2: Convert to fraction form
    83,515.69/125,142.14 = 64,586.66/x
  3. Step 3: Cross multiply
    83,515.69x = 125,142.14 × 64,586.66
  4. Step 4: Simplify right side
    83,515.69x = 8,082,512,847.85
  5. Step 5: Solve for x
    x = 8,082,512,847.85/83,515.69
  6. Step 6: Final answer
    x = 96,778.38

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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.