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Finding the Fourth Proportional to 67,220.67, 100,845.65 and 20,472.33

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Solution

The fourth proportional to 67,220.67, 100,845.65 and 20,472.33 is: 30,712.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,220.67 : 100,845.65 = 20,472.33 : x
  2. Step 2: Convert to fraction form
    67,220.67/100,845.65 = 20,472.33/x
  3. Step 3: Cross multiply
    67,220.67x = 100,845.65 × 20,472.33
  4. Step 4: Simplify right side
    67,220.67x = 2,064,545,323.50
  5. Step 5: Solve for x
    x = 2,064,545,323.50/67,220.67
  6. Step 6: Final answer
    x = 30,712.95

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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.