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Finding the Fourth Proportional to 74,299.88, 102,535.64 and 40,765.88

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Solution

The fourth proportional to 74,299.88, 102,535.64 and 40,765.88 is: 56,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,299.88 : 102,535.64 = 40,765.88 : x
  2. Step 2: Convert to fraction form
    74,299.88/102,535.64 = 40,765.88/x
  3. Step 3: Cross multiply
    74,299.88x = 102,535.64 × 40,765.88
  4. Step 4: Simplify right side
    74,299.88x = 4,179,954,879.46
  5. Step 5: Solve for x
    x = 4,179,954,879.46/74,299.88
  6. Step 6: Final answer
    x = 56,257.90

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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.