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Finding the Fourth Proportional to 69,196.60, 103,622.10 and 45,695.80

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Solution

The fourth proportional to 69,196.60, 103,622.10 and 45,695.80 is: 68,429.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,196.60 : 103,622.10 = 45,695.80 : x
  2. Step 2: Convert to fraction form
    69,196.60/103,622.10 = 45,695.80/x
  3. Step 3: Cross multiply
    69,196.60x = 103,622.10 × 45,695.80
  4. Step 4: Simplify right side
    69,196.60x = 4,735,094,757.18
  5. Step 5: Solve for x
    x = 4,735,094,757.18/69,196.60
  6. Step 6: Final answer
    x = 68,429.59

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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.