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Finding the Fourth Proportional to 74,362.97, 102,622.13 and 40,371.46

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Solution

The fourth proportional to 74,362.97, 102,622.13 and 40,371.46 is: 55,713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,362.97 : 102,622.13 = 40,371.46 : x
  2. Step 2: Convert to fraction form
    74,362.97/102,622.13 = 40,371.46/x
  3. Step 3: Cross multiply
    74,362.97x = 102,622.13 × 40,371.46
  4. Step 4: Simplify right side
    74,362.97x = 4,143,005,216.41
  5. Step 5: Solve for x
    x = 4,143,005,216.41/74,362.97
  6. Step 6: Final answer
    x = 55,713.28

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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.