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Finding the Fourth Proportional to 66,992.64, 92,451.03 and 36,780.81

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Solution

The fourth proportional to 66,992.64, 92,451.03 and 36,780.81 is: 50,758.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,992.64 : 92,451.03 = 36,780.81 : x
  2. Step 2: Convert to fraction form
    66,992.64/92,451.03 = 36,780.81/x
  3. Step 3: Cross multiply
    66,992.64x = 92,451.03 × 36,780.81
  4. Step 4: Simplify right side
    66,992.64x = 3,400,423,768.73
  5. Step 5: Solve for x
    x = 3,400,423,768.73/66,992.64
  6. Step 6: Final answer
    x = 50,758.17

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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.