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Finding the Fourth Proportional to 68,719.60, 96,285.20 and 68,719.60

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Solution

The fourth proportional to 68,719.60, 96,285.20 and 68,719.60 is: 96,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,719.60 : 96,285.20 = 68,719.60 : x
  2. Step 2: Convert to fraction form
    68,719.60/96,285.20 = 68,719.60/x
  3. Step 3: Cross multiply
    68,719.60x = 96,285.20 × 68,719.60
  4. Step 4: Simplify right side
    68,719.60x = 6,616,680,429.92
  5. Step 5: Solve for x
    x = 6,616,680,429.92/68,719.60
  6. Step 6: Final answer
    x = 96,285.20

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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.