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Finding the Fourth Proportional to 68,409.20, 95,539.60 and 68,409.20

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Solution

The fourth proportional to 68,409.20, 95,539.60 and 68,409.20 is: 95,539.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,409.20 : 95,539.60 = 68,409.20 : x
  2. Step 2: Convert to fraction form
    68,409.20/95,539.60 = 68,409.20/x
  3. Step 3: Cross multiply
    68,409.20x = 95,539.60 × 68,409.20
  4. Step 4: Simplify right side
    68,409.20x = 6,535,787,604.32
  5. Step 5: Solve for x
    x = 6,535,787,604.32/68,409.20
  6. Step 6: Final answer
    x = 95,539.60

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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.