Home / 77,331.38-115,992.80-21,167.42

Finding the Fourth Proportional to 77,331.38, 115,992.80 and 21,167.42

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Solution

The fourth proportional to 77,331.38, 115,992.80 and 21,167.42 is: 31,749.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,331.38 : 115,992.80 = 21,167.42 : x
  2. Step 2: Convert to fraction form
    77,331.38/115,992.80 = 21,167.42/x
  3. Step 3: Cross multiply
    77,331.38x = 115,992.80 × 21,167.42
  4. Step 4: Simplify right side
    77,331.38x = 2,455,268,314.58
  5. Step 5: Solve for x
    x = 2,455,268,314.58/77,331.38
  6. Step 6: Final answer
    x = 31,749.96

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1.5x scale

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.