Home / 80,172.31-120,222.93-42,725.41

Finding the Fourth Proportional to 80,172.31, 120,222.93 and 42,725.41

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Solution

The fourth proportional to 80,172.31, 120,222.93 and 42,725.41 is: 64,069.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,172.31 : 120,222.93 = 42,725.41 : x
  2. Step 2: Convert to fraction form
    80,172.31/120,222.93 = 42,725.41/x
  3. Step 3: Cross multiply
    80,172.31x = 120,222.93 × 42,725.41
  4. Step 4: Simplify right side
    80,172.31x = 5,136,573,975.65
  5. Step 5: Solve for x
    x = 5,136,573,975.65/80,172.31
  6. Step 6: Final answer
    x = 64,069.18

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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.