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Finding the Fourth Proportional to 66,267.72, 99,404.70 and 21,898.44

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Solution

The fourth proportional to 66,267.72, 99,404.70 and 21,898.44 is: 32,848.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,267.72 : 99,404.70 = 21,898.44 : x
  2. Step 2: Convert to fraction form
    66,267.72/99,404.70 = 21,898.44/x
  3. Step 3: Cross multiply
    66,267.72x = 99,404.70 × 21,898.44
  4. Step 4: Simplify right side
    66,267.72x = 2,176,807,858.67
  5. Step 5: Solve for x
    x = 2,176,807,858.67/66,267.72
  6. Step 6: Final answer
    x = 32,848.69

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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.