Home / 82,647.67-123,970.97-39,903.21

Finding the Fourth Proportional to 82,647.67, 123,970.97 and 39,903.21

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Solution

The fourth proportional to 82,647.67, 123,970.97 and 39,903.21 is: 59,854.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,647.67 : 123,970.97 = 39,903.21 : x
  2. Step 2: Convert to fraction form
    82,647.67/123,970.97 = 39,903.21/x
  3. Step 3: Cross multiply
    82,647.67x = 123,970.97 × 39,903.21
  4. Step 4: Simplify right side
    82,647.67x = 4,946,839,450.30
  5. Step 5: Solve for x
    x = 4,946,839,450.30/82,647.67
  6. Step 6: Final answer
    x = 59,854.56

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1.5x scale

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.