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Finding the Fourth Proportional to 67,164.90, 100,813.37 and 51,221.67

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Solution

The fourth proportional to 67,164.90, 100,813.37 and 51,221.67 is: 76,882.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,164.90 : 100,813.37 = 51,221.67 : x
  2. Step 2: Convert to fraction form
    67,164.90/100,813.37 = 51,221.67/x
  3. Step 3: Cross multiply
    67,164.90x = 100,813.37 × 51,221.67
  4. Step 4: Simplify right side
    67,164.90x = 5,163,828,913.62
  5. Step 5: Solve for x
    x = 5,163,828,913.62/67,164.90
  6. Step 6: Final answer
    x = 76,882.85

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1.5x scale

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.