Home / 57,159.29-78,878.97-31,665.60

Finding the Fourth Proportional to 57,159.29, 78,878.97 and 31,665.60

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Solution

The fourth proportional to 57,159.29, 78,878.97 and 31,665.60 is: 43,698.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,159.29 : 78,878.97 = 31,665.60 : x
  2. Step 2: Convert to fraction form
    57,159.29/78,878.97 = 31,665.60/x
  3. Step 3: Cross multiply
    57,159.29x = 78,878.97 × 31,665.60
  4. Step 4: Simplify right side
    57,159.29x = 2,497,749,951.30
  5. Step 5: Solve for x
    x = 2,497,749,951.30/57,159.29
  6. Step 6: Final answer
    x = 43,698.06

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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.