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Finding the Fourth Proportional to 66,474.80, 99,643.80 and 29,027.87

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Solution

The fourth proportional to 66,474.80, 99,643.80 and 29,027.87 is: 43,511.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,474.80 : 99,643.80 = 29,027.87 : x
  2. Step 2: Convert to fraction form
    66,474.80/99,643.80 = 29,027.87/x
  3. Step 3: Cross multiply
    66,474.80x = 99,643.80 × 29,027.87
  4. Step 4: Simplify right side
    66,474.80x = 2,892,447,521.82
  5. Step 5: Solve for x
    x = 2,892,447,521.82/66,474.80
  6. Step 6: Final answer
    x = 43,511.94

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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.