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Finding the Fourth Proportional to 68,610.48, 102,915.72 and 45,231.44

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Solution

The fourth proportional to 68,610.48, 102,915.72 and 45,231.44 is: 67,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,610.48 : 102,915.72 = 45,231.44 : x
  2. Step 2: Convert to fraction form
    68,610.48/102,915.72 = 45,231.44/x
  3. Step 3: Cross multiply
    68,610.48x = 102,915.72 × 45,231.44
  4. Step 4: Simplify right side
    68,610.48x = 4,655,026,214.24
  5. Step 5: Solve for x
    x = 4,655,026,214.24/68,610.48
  6. Step 6: Final answer
    x = 67,847.16

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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.