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Finding the Fourth Proportional to 68,996.40, 103,494.60 and 19,748.40

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Solution

The fourth proportional to 68,996.40, 103,494.60 and 19,748.40 is: 29,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,996.40 : 103,494.60 = 19,748.40 : x
  2. Step 2: Convert to fraction form
    68,996.40/103,494.60 = 19,748.40/x
  3. Step 3: Cross multiply
    68,996.40x = 103,494.60 × 19,748.40
  4. Step 4: Simplify right side
    68,996.40x = 2,043,852,758.64
  5. Step 5: Solve for x
    x = 2,043,852,758.64/68,996.40
  6. Step 6: Final answer
    x = 29,622.60

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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.