Home / 81,542.66-112,481.08-51,279.98

Finding the Fourth Proportional to 81,542.66, 112,481.08 and 51,279.98

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Solution

The fourth proportional to 81,542.66, 112,481.08 and 51,279.98 is: 70,736.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,542.66 : 112,481.08 = 51,279.98 : x
  2. Step 2: Convert to fraction form
    81,542.66/112,481.08 = 51,279.98/x
  3. Step 3: Cross multiply
    81,542.66x = 112,481.08 × 51,279.98
  4. Step 4: Simplify right side
    81,542.66x = 5,768,026,842.17
  5. Step 5: Solve for x
    x = 5,768,026,842.17/81,542.66
  6. Step 6: Final answer
    x = 70,736.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.