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Finding the Fourth Proportional to 68,110.80, 102,117.60 and 30,640.20

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Solution

The fourth proportional to 68,110.80, 102,117.60 and 30,640.20 is: 45,938.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,110.80 : 102,117.60 = 30,640.20 : x
  2. Step 2: Convert to fraction form
    68,110.80/102,117.60 = 30,640.20/x
  3. Step 3: Cross multiply
    68,110.80x = 102,117.60 × 30,640.20
  4. Step 4: Simplify right side
    68,110.80x = 3,128,903,687.52
  5. Step 5: Solve for x
    x = 3,128,903,687.52/68,110.80
  6. Step 6: Final answer
    x = 45,938.44

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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.