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Finding the Fourth Proportional to 68,281.60, 102,427.20 and 38,713.60

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Solution

The fourth proportional to 68,281.60, 102,427.20 and 38,713.60 is: 58,073.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,281.60 : 102,427.20 = 38,713.60 : x
  2. Step 2: Convert to fraction form
    68,281.60/102,427.20 = 38,713.60/x
  3. Step 3: Cross multiply
    68,281.60x = 102,427.20 × 38,713.60
  4. Step 4: Simplify right side
    68,281.60x = 3,965,325,649.92
  5. Step 5: Solve for x
    x = 3,965,325,649.92/68,281.60
  6. Step 6: Final answer
    x = 58,073.12

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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.