Home / 57,157.14-78,873.04-31,661.79

Finding the Fourth Proportional to 57,157.14, 78,873.04 and 31,661.79

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Solution

The fourth proportional to 57,157.14, 78,873.04 and 31,661.79 is: 43,691.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,157.14 : 78,873.04 = 31,661.79 : x
  2. Step 2: Convert to fraction form
    57,157.14/78,873.04 = 31,661.79/x
  3. Step 3: Cross multiply
    57,157.14x = 78,873.04 × 31,661.79
  4. Step 4: Simplify right side
    57,157.14x = 2,497,261,372.94
  5. Step 5: Solve for x
    x = 2,497,261,372.94/57,157.14
  6. Step 6: Final answer
    x = 43,691.15

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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.