Home / 74,708.31-103,057.38-47,821.89

Finding the Fourth Proportional to 74,708.31, 103,057.38 and 47,821.89

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Solution

The fourth proportional to 74,708.31, 103,057.38 and 47,821.89 is: 65,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,708.31 : 103,057.38 = 47,821.89 : x
  2. Step 2: Convert to fraction form
    74,708.31/103,057.38 = 47,821.89/x
  3. Step 3: Cross multiply
    74,708.31x = 103,057.38 × 47,821.89
  4. Step 4: Simplify right side
    74,708.31x = 4,928,398,690.05
  5. Step 5: Solve for x
    x = 4,928,398,690.05/74,708.31
  6. Step 6: Final answer
    x = 65,968.55

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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.