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Finding the Fourth Proportional to 69,761.64, 104,642.22 and 19,160.72

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Solution

The fourth proportional to 69,761.64, 104,642.22 and 19,160.72 is: 28,741.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,761.64 : 104,642.22 = 19,160.72 : x
  2. Step 2: Convert to fraction form
    69,761.64/104,642.22 = 19,160.72/x
  3. Step 3: Cross multiply
    69,761.64x = 104,642.22 × 19,160.72
  4. Step 4: Simplify right side
    69,761.64x = 2,005,019,754.39
  5. Step 5: Solve for x
    x = 2,005,019,754.39/69,761.64
  6. Step 6: Final answer
    x = 28,741.01

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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.