Home / 67,235.49-100,815.90-31,172.54

Finding the Fourth Proportional to 67,235.49, 100,815.90 and 31,172.54

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Solution

The fourth proportional to 67,235.49, 100,815.90 and 31,172.54 is: 46,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,235.49 : 100,815.90 = 31,172.54 : x
  2. Step 2: Convert to fraction form
    67,235.49/100,815.90 = 31,172.54/x
  3. Step 3: Cross multiply
    67,235.49x = 100,815.90 × 31,172.54
  4. Step 4: Simplify right side
    67,235.49x = 3,142,687,171.31
  5. Step 5: Solve for x
    x = 3,142,687,171.31/67,235.49
  6. Step 6: Final answer
    x = 46,741.49

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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.