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Finding the Fourth Proportional to 67,080.40, 100,361.40 and 43,752.40

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Solution

The fourth proportional to 67,080.40, 100,361.40 and 43,752.40 is: 65,459.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,080.40 : 100,361.40 = 43,752.40 : x
  2. Step 2: Convert to fraction form
    67,080.40/100,361.40 = 43,752.40/x
  3. Step 3: Cross multiply
    67,080.40x = 100,361.40 × 43,752.40
  4. Step 4: Simplify right side
    67,080.40x = 4,391,052,117.36
  5. Step 5: Solve for x
    x = 4,391,052,117.36/67,080.40
  6. Step 6: Final answer
    x = 65,459.54

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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.