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Finding the Fourth Proportional to 66,933.48, 100,334.94 and 31,863.72

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Solution

The fourth proportional to 66,933.48, 100,334.94 and 31,863.72 is: 47,764.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,933.48 : 100,334.94 = 31,863.72 : x
  2. Step 2: Convert to fraction form
    66,933.48/100,334.94 = 31,863.72/x
  3. Step 3: Cross multiply
    66,933.48x = 100,334.94 × 31,863.72
  4. Step 4: Simplify right side
    66,933.48x = 3,197,044,434.38
  5. Step 5: Solve for x
    x = 3,197,044,434.38/66,933.48
  6. Step 6: Final answer
    x = 47,764.50

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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.