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Finding the Fourth Proportional to 66,086.98, 99,136.76 and 21,713.98

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Solution

The fourth proportional to 66,086.98, 99,136.76 and 21,713.98 is: 32,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.98 : 99,136.76 = 21,713.98 : x
  2. Step 2: Convert to fraction form
    66,086.98/99,136.76 = 21,713.98/x
  3. Step 3: Cross multiply
    66,086.98x = 99,136.76 × 21,713.98
  4. Step 4: Simplify right side
    66,086.98x = 2,152,653,623.90
  5. Step 5: Solve for x
    x = 2,152,653,623.90/66,086.98
  6. Step 6: Final answer
    x = 32,573.04

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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.