Home / 74,912.47-103,379.56-40,921.43

Finding the Fourth Proportional to 74,912.47, 103,379.56 and 40,921.43

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Solution

The fourth proportional to 74,912.47, 103,379.56 and 40,921.43 is: 56,471.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,912.47 : 103,379.56 = 40,921.43 : x
  2. Step 2: Convert to fraction form
    74,912.47/103,379.56 = 40,921.43/x
  3. Step 3: Cross multiply
    74,912.47x = 103,379.56 × 40,921.43
  4. Step 4: Simplify right side
    74,912.47x = 4,230,439,427.97
  5. Step 5: Solve for x
    x = 4,230,439,427.97/74,912.47
  6. Step 6: Final answer
    x = 56,471.77

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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.