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Finding the Fourth Proportional to 88,131.78, 132,197.67 and 31,979.34

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Solution

The fourth proportional to 88,131.78, 132,197.67 and 31,979.34 is: 47,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,131.78 : 132,197.67 = 31,979.34 : x
  2. Step 2: Convert to fraction form
    88,131.78/132,197.67 = 31,979.34/x
  3. Step 3: Cross multiply
    88,131.78x = 132,197.67 × 31,979.34
  4. Step 4: Simplify right side
    88,131.78x = 4,227,594,236.14
  5. Step 5: Solve for x
    x = 4,227,594,236.14/88,131.78
  6. Step 6: Final answer
    x = 47,969.01

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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.