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Finding the Fourth Proportional to 68,103.60, 102,232.20 and 40,417.20

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Solution

The fourth proportional to 68,103.60, 102,232.20 and 40,417.20 is: 60,671.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,103.60 : 102,232.20 = 40,417.20 : x
  2. Step 2: Convert to fraction form
    68,103.60/102,232.20 = 40,417.20/x
  3. Step 3: Cross multiply
    68,103.60x = 102,232.20 × 40,417.20
  4. Step 4: Simplify right side
    68,103.60x = 4,131,939,273.84
  5. Step 5: Solve for x
    x = 4,131,939,273.84/68,103.60
  6. Step 6: Final answer
    x = 60,671.38

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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.