Home / 71,721.44-107,582.16-19,131.14

Finding the Fourth Proportional to 71,721.44, 107,582.16 and 19,131.14

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Solution

The fourth proportional to 71,721.44, 107,582.16 and 19,131.14 is: 28,696.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,721.44 : 107,582.16 = 19,131.14 : x
  2. Step 2: Convert to fraction form
    71,721.44/107,582.16 = 19,131.14/x
  3. Step 3: Cross multiply
    71,721.44x = 107,582.16 × 19,131.14
  4. Step 4: Simplify right side
    71,721.44x = 2,058,169,364.46
  5. Step 5: Solve for x
    x = 2,058,169,364.46/71,721.44
  6. Step 6: Final answer
    x = 28,696.71

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Similar ratio
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1.5x scale

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.