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Finding the Fourth Proportional to 74,165.70, 102,348.90 and 40,174.56

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Solution

The fourth proportional to 74,165.70, 102,348.90 and 40,174.56 is: 55,441.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,165.70 : 102,348.90 = 40,174.56 : x
  2. Step 2: Convert to fraction form
    74,165.70/102,348.90 = 40,174.56/x
  3. Step 3: Cross multiply
    74,165.70x = 102,348.90 × 40,174.56
  4. Step 4: Simplify right side
    74,165.70x = 4,111,822,023.98
  5. Step 5: Solve for x
    x = 4,111,822,023.98/74,165.70
  6. Step 6: Final answer
    x = 55,441.02

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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.