Home / 92,021.03-138,031.76-27,979.76

Finding the Fourth Proportional to 92,021.03, 138,031.76 and 27,979.76

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Solution

The fourth proportional to 92,021.03, 138,031.76 and 27,979.76 is: 41,969.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,021.03 : 138,031.76 = 27,979.76 : x
  2. Step 2: Convert to fraction form
    92,021.03/138,031.76 = 27,979.76/x
  3. Step 3: Cross multiply
    92,021.03x = 138,031.76 × 27,979.76
  4. Step 4: Simplify right side
    92,021.03x = 3,862,095,932.21
  5. Step 5: Solve for x
    x = 3,862,095,932.21/92,021.03
  6. Step 6: Final answer
    x = 41,969.71

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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.