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Finding the Fourth Proportional to 66,279, 91,465.02 and 36,471

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Solution

The fourth proportional to 66,279, 91,465.02 and 36,471 is: 50,329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,279 : 91,465.02 = 36,471 : x
  2. Step 2: Convert to fraction form
    66,279/91,465.02 = 36,471/x
  3. Step 3: Cross multiply
    66,279x = 91,465.02 × 36,471
  4. Step 4: Simplify right side
    66,279x = 3,335,820,744.42
  5. Step 5: Solve for x
    x = 3,335,820,744.42/66,279
  6. Step 6: Final answer
    x = 50,329.98

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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.