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Finding the Fourth Proportional to 67,279.82, 100,286.51 and 65,131.16

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Solution

The fourth proportional to 67,279.82, 100,286.51 and 65,131.16 is: 97,083.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,279.82 : 100,286.51 = 65,131.16 : x
  2. Step 2: Convert to fraction form
    67,279.82/100,286.51 = 65,131.16/x
  3. Step 3: Cross multiply
    67,279.82x = 100,286.51 × 65,131.16
  4. Step 4: Simplify right side
    67,279.82x = 6,531,775,901.56
  5. Step 5: Solve for x
    x = 6,531,775,901.56/67,279.82
  6. Step 6: Final answer
    x = 97,083.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.