Home / 84,282.21-126,428.18-31,692.15

Finding the Fourth Proportional to 84,282.21, 126,428.18 and 31,692.15

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Solution

The fourth proportional to 84,282.21, 126,428.18 and 31,692.15 is: 47,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,282.21 : 126,428.18 = 31,692.15 : x
  2. Step 2: Convert to fraction form
    84,282.21/126,428.18 = 31,692.15/x
  3. Step 3: Cross multiply
    84,282.21x = 126,428.18 × 31,692.15
  4. Step 4: Simplify right side
    84,282.21x = 4,006,780,844.79
  5. Step 5: Solve for x
    x = 4,006,780,844.79/84,282.21
  6. Step 6: Final answer
    x = 47,540.05

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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.