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Finding the Fourth Proportional to 66,672.32, 99,932.34 and 22,288.64

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Solution

The fourth proportional to 66,672.32, 99,932.34 and 22,288.64 is: 33,407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,672.32 : 99,932.34 = 22,288.64 : x
  2. Step 2: Convert to fraction form
    66,672.32/99,932.34 = 22,288.64/x
  3. Step 3: Cross multiply
    66,672.32x = 99,932.34 × 22,288.64
  4. Step 4: Simplify right side
    66,672.32x = 2,227,355,950.62
  5. Step 5: Solve for x
    x = 2,227,355,950.62/66,672.32
  6. Step 6: Final answer
    x = 33,407.51

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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.