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Finding the Fourth Proportional to 72,144.55, 108,228.67 and 22,223.55

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Solution

The fourth proportional to 72,144.55, 108,228.67 and 22,223.55 is: 33,338.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,144.55 : 108,228.67 = 22,223.55 : x
  2. Step 2: Convert to fraction form
    72,144.55/108,228.67 = 22,223.55/x
  3. Step 3: Cross multiply
    72,144.55x = 108,228.67 × 22,223.55
  4. Step 4: Simplify right side
    72,144.55x = 2,405,225,203.62
  5. Step 5: Solve for x
    x = 2,405,225,203.62/72,144.55
  6. Step 6: Final answer
    x = 33,338.97

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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.