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Finding the Fourth Proportional to 68,101.10, 102,115.20 and 28,613.60

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Solution

The fourth proportional to 68,101.10, 102,115.20 and 28,613.60 is: 42,905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,101.10 : 102,115.20 = 28,613.60 : x
  2. Step 2: Convert to fraction form
    68,101.10/102,115.20 = 28,613.60/x
  3. Step 3: Cross multiply
    68,101.10x = 102,115.20 × 28,613.60
  4. Step 4: Simplify right side
    68,101.10x = 2,921,883,486.72
  5. Step 5: Solve for x
    x = 2,921,883,486.72/68,101.10
  6. Step 6: Final answer
    x = 42,905.09

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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.