Home / 85,147.13-127,743.75-31,844.52

Finding the Fourth Proportional to 85,147.13, 127,743.75 and 31,844.52

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Solution

The fourth proportional to 85,147.13, 127,743.75 and 31,844.52 is: 47,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,147.13 : 127,743.75 = 31,844.52 : x
  2. Step 2: Convert to fraction form
    85,147.13/127,743.75 = 31,844.52/x
  3. Step 3: Cross multiply
    85,147.13x = 127,743.75 × 31,844.52
  4. Step 4: Simplify right side
    85,147.13x = 4,067,938,721.11
  5. Step 5: Solve for x
    x = 4,067,938,721.11/85,147.13
  6. Step 6: Final answer
    x = 47,775.41

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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.