Home / 84,282.12-126,428.03-31,692.06

Finding the Fourth Proportional to 84,282.12, 126,428.03 and 31,692.06

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Solution

The fourth proportional to 84,282.12, 126,428.03 and 31,692.06 is: 47,539.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,282.12 : 126,428.03 = 31,692.06 : x
  2. Step 2: Convert to fraction form
    84,282.12/126,428.03 = 31,692.06/x
  3. Step 3: Cross multiply
    84,282.12x = 126,428.03 × 31,692.06
  4. Step 4: Simplify right side
    84,282.12x = 4,006,764,198.72
  5. Step 5: Solve for x
    x = 4,006,764,198.72/84,282.12
  6. Step 6: Final answer
    x = 47,539.91

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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.