Home / 57,155.88-78,873.33-31,661.22

Finding the Fourth Proportional to 57,155.88, 78,873.33 and 31,661.22

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Solution

The fourth proportional to 57,155.88, 78,873.33 and 31,661.22 is: 43,691.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,155.88 : 78,873.33 = 31,661.22 : x
  2. Step 2: Convert to fraction form
    57,155.88/78,873.33 = 31,661.22/x
  3. Step 3: Cross multiply
    57,155.88x = 78,873.33 × 31,661.22
  4. Step 4: Simplify right side
    57,155.88x = 2,497,225,853.26
  5. Step 5: Solve for x
    x = 2,497,225,853.26/57,155.88
  6. Step 6: Final answer
    x = 43,691.50

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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.