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Finding the Fourth Proportional to 74,589.71, 102,936.34 and 40,599.45

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Solution

The fourth proportional to 74,589.71, 102,936.34 and 40,599.45 is: 56,028.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,589.71 : 102,936.34 = 40,599.45 : x
  2. Step 2: Convert to fraction form
    74,589.71/102,936.34 = 40,599.45/x
  3. Step 3: Cross multiply
    74,589.71x = 102,936.34 × 40,599.45
  4. Step 4: Simplify right side
    74,589.71x = 4,179,158,633.17
  5. Step 5: Solve for x
    x = 4,179,158,633.17/74,589.71
  6. Step 6: Final answer
    x = 56,028.62

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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.