Home / 78,383.52-117,588.72-25,807.92

Finding the Fourth Proportional to 78,383.52, 117,588.72 and 25,807.92

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Solution

The fourth proportional to 78,383.52, 117,588.72 and 25,807.92 is: 38,716.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,383.52 : 117,588.72 = 25,807.92 : x
  2. Step 2: Convert to fraction form
    78,383.52/117,588.72 = 25,807.92/x
  3. Step 3: Cross multiply
    78,383.52x = 117,588.72 × 25,807.92
  4. Step 4: Simplify right side
    78,383.52x = 3,034,720,278.66
  5. Step 5: Solve for x
    x = 3,034,720,278.66/78,383.52
  6. Step 6: Final answer
    x = 38,716.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.