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Finding the Fourth Proportional to 66,647.61, 100,011.71 and 29,209.82

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Solution

The fourth proportional to 66,647.61, 100,011.71 and 29,209.82 is: 43,832.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,647.61 : 100,011.71 = 29,209.82 : x
  2. Step 2: Convert to fraction form
    66,647.61/100,011.71 = 29,209.82/x
  3. Step 3: Cross multiply
    66,647.61x = 100,011.71 × 29,209.82
  4. Step 4: Simplify right side
    66,647.61x = 2,921,323,619.96
  5. Step 5: Solve for x
    x = 2,921,323,619.96/66,647.61
  6. Step 6: Final answer
    x = 43,832.38

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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.