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Finding the Fourth Proportional to 67,998.75, 101,811.20 and 51,308.30

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Solution

The fourth proportional to 67,998.75, 101,811.20 and 51,308.30 is: 76,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,998.75 : 101,811.20 = 51,308.30 : x
  2. Step 2: Convert to fraction form
    67,998.75/101,811.20 = 51,308.30/x
  3. Step 3: Cross multiply
    67,998.75x = 101,811.20 × 51,308.30
  4. Step 4: Simplify right side
    67,998.75x = 5,223,758,827.36
  5. Step 5: Solve for x
    x = 5,223,758,827.36/67,998.75
  6. Step 6: Final answer
    x = 76,821.39

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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.