Home / 85,299.27-127,971.59-29,139.29

Finding the Fourth Proportional to 85,299.27, 127,971.59 and 29,139.29

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Solution

The fourth proportional to 85,299.27, 127,971.59 and 29,139.29 is: 43,716.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,299.27 : 127,971.59 = 29,139.29 : x
  2. Step 2: Convert to fraction form
    85,299.27/127,971.59 = 29,139.29/x
  3. Step 3: Cross multiply
    85,299.27x = 127,971.59 × 29,139.29
  4. Step 4: Simplify right side
    85,299.27x = 3,729,000,967.11
  5. Step 5: Solve for x
    x = 3,729,000,967.11/85,299.27
  6. Step 6: Final answer
    x = 43,716.68

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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.