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Finding the Fourth Proportional to 68,257.20, 102,385.80 and 45,998.40

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Solution

The fourth proportional to 68,257.20, 102,385.80 and 45,998.40 is: 68,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,257.20 : 102,385.80 = 45,998.40 : x
  2. Step 2: Convert to fraction form
    68,257.20/102,385.80 = 45,998.40/x
  3. Step 3: Cross multiply
    68,257.20x = 102,385.80 × 45,998.40
  4. Step 4: Simplify right side
    68,257.20x = 4,709,582,982.72
  5. Step 5: Solve for x
    x = 4,709,582,982.72/68,257.20
  6. Step 6: Final answer
    x = 68,997.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.