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Finding the Fourth Proportional to 66,543.66, 99,834.12 and 29,107.08

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Solution

The fourth proportional to 66,543.66, 99,834.12 and 29,107.08 is: 43,668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,543.66 : 99,834.12 = 29,107.08 : x
  2. Step 2: Convert to fraction form
    66,543.66/99,834.12 = 29,107.08/x
  3. Step 3: Cross multiply
    66,543.66x = 99,834.12 × 29,107.08
  4. Step 4: Simplify right side
    66,543.66x = 2,905,879,717.57
  5. Step 5: Solve for x
    x = 2,905,879,717.57/66,543.66
  6. Step 6: Final answer
    x = 43,668.77

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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.