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Finding the Fourth Proportional to 66,293.64, 99,446.94 and 19,559.88

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Solution

The fourth proportional to 66,293.64, 99,446.94 and 19,559.88 is: 29,341.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,293.64 : 99,446.94 = 19,559.88 : x
  2. Step 2: Convert to fraction form
    66,293.64/99,446.94 = 19,559.88/x
  3. Step 3: Cross multiply
    66,293.64x = 99,446.94 × 19,559.88
  4. Step 4: Simplify right side
    66,293.64x = 1,945,170,212.77
  5. Step 5: Solve for x
    x = 1,945,170,212.77/66,293.64
  6. Step 6: Final answer
    x = 29,341.73

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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.