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Finding the Fourth Proportional to 74,765.70, 103,179.96 and 42,944.58

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Solution

The fourth proportional to 74,765.70, 103,179.96 and 42,944.58 is: 59,265.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,765.70 : 103,179.96 = 42,944.58 : x
  2. Step 2: Convert to fraction form
    74,765.70/103,179.96 = 42,944.58/x
  3. Step 3: Cross multiply
    74,765.70x = 103,179.96 × 42,944.58
  4. Step 4: Simplify right side
    74,765.70x = 4,431,020,046.62
  5. Step 5: Solve for x
    x = 4,431,020,046.62/74,765.70
  6. Step 6: Final answer
    x = 59,265.41

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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.