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Finding the Fourth Proportional to 66,340.82, 99,492.75 and 21,971.04

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Solution

The fourth proportional to 66,340.82, 99,492.75 and 21,971.04 is: 32,950.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,340.82 : 99,492.75 = 21,971.04 : x
  2. Step 2: Convert to fraction form
    66,340.82/99,492.75 = 21,971.04/x
  3. Step 3: Cross multiply
    66,340.82x = 99,492.75 × 21,971.04
  4. Step 4: Simplify right side
    66,340.82x = 2,185,958,816.86
  5. Step 5: Solve for x
    x = 2,185,958,816.86/66,340.82
  6. Step 6: Final answer
    x = 32,950.43

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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.