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Finding the Fourth Proportional to 69,850.60, 96,407.12 and 39,638.73

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Solution

The fourth proportional to 69,850.60, 96,407.12 and 39,638.73 is: 54,708.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,850.60 : 96,407.12 = 39,638.73 : x
  2. Step 2: Convert to fraction form
    69,850.60/96,407.12 = 39,638.73/x
  3. Step 3: Cross multiply
    69,850.60x = 96,407.12 × 39,638.73
  4. Step 4: Simplify right side
    69,850.60x = 3,821,455,799.76
  5. Step 5: Solve for x
    x = 3,821,455,799.76/69,850.60
  6. Step 6: Final answer
    x = 54,708.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.