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Finding the Fourth Proportional to 68,438.20, 95,580.20 and 68,438.20

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Solution

The fourth proportional to 68,438.20, 95,580.20 and 68,438.20 is: 95,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,438.20 : 95,580.20 = 68,438.20 : x
  2. Step 2: Convert to fraction form
    68,438.20/95,580.20 = 68,438.20/x
  3. Step 3: Cross multiply
    68,438.20x = 95,580.20 × 68,438.20
  4. Step 4: Simplify right side
    68,438.20x = 6,541,336,843.64
  5. Step 5: Solve for x
    x = 6,541,336,843.64/68,438.20
  6. Step 6: Final answer
    x = 95,580.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.