Home / 85,085.24-127,612.82-31,765.26

Finding the Fourth Proportional to 85,085.24, 127,612.82 and 31,765.26

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Solution

The fourth proportional to 85,085.24, 127,612.82 and 31,765.26 is: 47,642.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,085.24 : 127,612.82 = 31,765.26 : x
  2. Step 2: Convert to fraction form
    85,085.24/127,612.82 = 31,765.26/x
  3. Step 3: Cross multiply
    85,085.24x = 127,612.82 × 31,765.26
  4. Step 4: Simplify right side
    85,085.24x = 4,053,654,785.91
  5. Step 5: Solve for x
    x = 4,053,654,785.91/85,085.24
  6. Step 6: Final answer
    x = 47,642.28

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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.