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Finding the Fourth Proportional to 74,644.73, 103,008.17 and 40,653.81

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Solution

The fourth proportional to 74,644.73, 103,008.17 and 40,653.81 is: 56,101.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,644.73 : 103,008.17 = 40,653.81 : x
  2. Step 2: Convert to fraction form
    74,644.73/103,008.17 = 40,653.81/x
  3. Step 3: Cross multiply
    74,644.73x = 103,008.17 × 40,653.81
  4. Step 4: Simplify right side
    74,644.73x = 4,187,674,571.63
  5. Step 5: Solve for x
    x = 4,187,674,571.63/74,644.73
  6. Step 6: Final answer
    x = 56,101.41

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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.