Home / 74,965.73-103,456.56-43,139.39

Finding the Fourth Proportional to 74,965.73, 103,456.56 and 43,139.39

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Solution

The fourth proportional to 74,965.73, 103,456.56 and 43,139.39 is: 59,534.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,965.73 : 103,456.56 = 43,139.39 : x
  2. Step 2: Convert to fraction form
    74,965.73/103,456.56 = 43,139.39/x
  3. Step 3: Cross multiply
    74,965.73x = 103,456.56 × 43,139.39
  4. Step 4: Simplify right side
    74,965.73x = 4,463,052,156.92
  5. Step 5: Solve for x
    x = 4,463,052,156.92/74,965.73
  6. Step 6: Final answer
    x = 59,534.57

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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.