Home / 43,279.54-64,921.71-21,111.82

Finding the Fourth Proportional to 43,279.54, 64,921.71 and 21,111.82

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Solution

The fourth proportional to 43,279.54, 64,921.71 and 21,111.82 is: 31,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,279.54 : 64,921.71 = 21,111.82 : x
  2. Step 2: Convert to fraction form
    43,279.54/64,921.71 = 21,111.82/x
  3. Step 3: Cross multiply
    43,279.54x = 64,921.71 × 21,111.82
  4. Step 4: Simplify right side
    43,279.54x = 1,370,615,455.61
  5. Step 5: Solve for x
    x = 1,370,615,455.61/43,279.54
  6. Step 6: Final answer
    x = 31,668.90

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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.