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Finding the Fourth Proportional to 66,165.04, 99,191.77 and 28,696.90

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Solution

The fourth proportional to 66,165.04, 99,191.77 and 28,696.90 is: 43,021.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,165.04 : 99,191.77 = 28,696.90 : x
  2. Step 2: Convert to fraction form
    66,165.04/99,191.77 = 28,696.90/x
  3. Step 3: Cross multiply
    66,165.04x = 99,191.77 × 28,696.90
  4. Step 4: Simplify right side
    66,165.04x = 2,846,496,232.77
  5. Step 5: Solve for x
    x = 2,846,496,232.77/66,165.04
  6. Step 6: Final answer
    x = 43,021.15

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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.