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Finding the Fourth Proportional to 74,469.94, 102,770.52 and 40,480.72

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Solution

The fourth proportional to 74,469.94, 102,770.52 and 40,480.72 is: 55,864.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,469.94 : 102,770.52 = 40,480.72 : x
  2. Step 2: Convert to fraction form
    74,469.94/102,770.52 = 40,480.72/x
  3. Step 3: Cross multiply
    74,469.94x = 102,770.52 × 40,480.72
  4. Step 4: Simplify right side
    74,469.94x = 4,160,224,082.35
  5. Step 5: Solve for x
    x = 4,160,224,082.35/74,469.94
  6. Step 6: Final answer
    x = 55,864.47

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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.