Home / 74,770.74-103,183.19-40,778.58

Finding the Fourth Proportional to 74,770.74, 103,183.19 and 40,778.58

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Solution

The fourth proportional to 74,770.74, 103,183.19 and 40,778.58 is: 56,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,770.74 : 103,183.19 = 40,778.58 : x
  2. Step 2: Convert to fraction form
    74,770.74/103,183.19 = 40,778.58/x
  3. Step 3: Cross multiply
    74,770.74x = 103,183.19 × 40,778.58
  4. Step 4: Simplify right side
    74,770.74x = 4,207,663,764.18
  5. Step 5: Solve for x
    x = 4,207,663,764.18/74,770.74
  6. Step 6: Final answer
    x = 56,274.20

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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.