Home / 74,770.76-103,183.34-40,778.64

Finding the Fourth Proportional to 74,770.76, 103,183.34 and 40,778.64

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Solution

The fourth proportional to 74,770.76, 103,183.34 and 40,778.64 is: 56,274.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,770.76 : 103,183.34 = 40,778.64 : x
  2. Step 2: Convert to fraction form
    74,770.76/103,183.34 = 40,778.64/x
  3. Step 3: Cross multiply
    74,770.76x = 103,183.34 × 40,778.64
  4. Step 4: Simplify right side
    74,770.76x = 4,207,676,071.96
  5. Step 5: Solve for x
    x = 4,207,676,071.96/74,770.76
  6. Step 6: Final answer
    x = 56,274.35

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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.