Home / 70,361.32-105,431.82-42,212.20

Finding the Fourth Proportional to 70,361.32, 105,431.82 and 42,212.20

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Solution

The fourth proportional to 70,361.32, 105,431.82 and 42,212.20 is: 63,252.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,361.32 : 105,431.82 = 42,212.20 : x
  2. Step 2: Convert to fraction form
    70,361.32/105,431.82 = 42,212.20/x
  3. Step 3: Cross multiply
    70,361.32x = 105,431.82 × 42,212.20
  4. Step 4: Simplify right side
    70,361.32x = 4,450,509,072.20
  5. Step 5: Solve for x
    x = 4,450,509,072.20/70,361.32
  6. Step 6: Final answer
    x = 63,252.21

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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.