Home / 70,361.12-105,544.96-39,172.88

Finding the Fourth Proportional to 70,361.12, 105,544.96 and 39,172.88

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Solution

The fourth proportional to 70,361.12, 105,544.96 and 39,172.88 is: 58,761.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,361.12 : 105,544.96 = 39,172.88 : x
  2. Step 2: Convert to fraction form
    70,361.12/105,544.96 = 39,172.88/x
  3. Step 3: Cross multiply
    70,361.12x = 105,544.96 × 39,172.88
  4. Step 4: Simplify right side
    70,361.12x = 4,134,500,052.68
  5. Step 5: Solve for x
    x = 4,134,500,052.68/70,361.12
  6. Step 6: Final answer
    x = 58,761.15

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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.