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Finding the Fourth Proportional to 40,014.40, 55,220 and 22,110.40

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Solution

The fourth proportional to 40,014.40, 55,220 and 22,110.40 is: 30,512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,014.40 : 55,220 = 22,110.40 : x
  2. Step 2: Convert to fraction form
    40,014.40/55,220 = 22,110.40/x
  3. Step 3: Cross multiply
    40,014.40x = 55,220 × 22,110.40
  4. Step 4: Simplify right side
    40,014.40x = 1,220,936,288
  5. Step 5: Solve for x
    x = 1,220,936,288/40,014.40
  6. Step 6: Final answer
    x = 30,512.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.