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Finding the Fourth Proportional to 43,472.20, 65,208.30 and 27,920.20

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Solution

The fourth proportional to 43,472.20, 65,208.30 and 27,920.20 is: 41,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,472.20 : 65,208.30 = 27,920.20 : x
  2. Step 2: Convert to fraction form
    43,472.20/65,208.30 = 27,920.20/x
  3. Step 3: Cross multiply
    43,472.20x = 65,208.30 × 27,920.20
  4. Step 4: Simplify right side
    43,472.20x = 1,820,628,777.66
  5. Step 5: Solve for x
    x = 1,820,628,777.66/43,472.20
  6. Step 6: Final answer
    x = 41,880.30

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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.