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Finding the Fourth Proportional to 74,091.79, 102,245.88 and 40,099.57

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Solution

The fourth proportional to 74,091.79, 102,245.88 and 40,099.57 is: 55,336.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,091.79 : 102,245.88 = 40,099.57 : x
  2. Step 2: Convert to fraction form
    74,091.79/102,245.88 = 40,099.57/x
  3. Step 3: Cross multiply
    74,091.79x = 102,245.88 × 40,099.57
  4. Step 4: Simplify right side
    74,091.79x = 4,100,015,822.27
  5. Step 5: Solve for x
    x = 4,100,015,822.27/74,091.79
  6. Step 6: Final answer
    x = 55,336.98

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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.