Home / 81,394.91-122,106.15-28,072.41

Finding the Fourth Proportional to 81,394.91, 122,106.15 and 28,072.41

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Solution

The fourth proportional to 81,394.91, 122,106.15 and 28,072.41 is: 42,113.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394.91 : 122,106.15 = 28,072.41 : x
  2. Step 2: Convert to fraction form
    81,394.91/122,106.15 = 28,072.41/x
  3. Step 3: Cross multiply
    81,394.91x = 122,106.15 × 28,072.41
  4. Step 4: Simplify right side
    81,394.91x = 3,427,813,448.42
  5. Step 5: Solve for x
    x = 3,427,813,448.42/81,394.91
  6. Step 6: Final answer
    x = 42,113.36

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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.