Home / 68,431.39-94,423.80-38,215.60

Finding the Fourth Proportional to 68,431.39, 94,423.80 and 38,215.60

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Solution

The fourth proportional to 68,431.39, 94,423.80 and 38,215.60 is: 52,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,431.39 : 94,423.80 = 38,215.60 : x
  2. Step 2: Convert to fraction form
    68,431.39/94,423.80 = 38,215.60/x
  3. Step 3: Cross multiply
    68,431.39x = 94,423.80 × 38,215.60
  4. Step 4: Simplify right side
    68,431.39x = 3,608,462,171.28
  5. Step 5: Solve for x
    x = 3,608,462,171.28/68,431.39
  6. Step 6: Final answer
    x = 52,731.10

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Half scale
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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.