Home / 68,390.38-94,394.48-40,105.18

Finding the Fourth Proportional to 68,390.38, 94,394.48 and 40,105.18

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Solution

The fourth proportional to 68,390.38, 94,394.48 and 40,105.18 is: 55,354.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,390.38 : 94,394.48 = 40,105.18 : x
  2. Step 2: Convert to fraction form
    68,390.38/94,394.48 = 40,105.18/x
  3. Step 3: Cross multiply
    68,390.38x = 94,394.48 × 40,105.18
  4. Step 4: Simplify right side
    68,390.38x = 3,785,707,611.41
  5. Step 5: Solve for x
    x = 3,785,707,611.41/68,390.38
  6. Step 6: Final answer
    x = 55,354.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.