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Finding the Fourth Proportional to 66,649.80, 99,936.90 and 27,160.68

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Solution

The fourth proportional to 66,649.80, 99,936.90 and 27,160.68 is: 40,725.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,649.80 : 99,936.90 = 27,160.68 : x
  2. Step 2: Convert to fraction form
    66,649.80/99,936.90 = 27,160.68/x
  3. Step 3: Cross multiply
    66,649.80x = 99,936.90 × 27,160.68
  4. Step 4: Simplify right side
    66,649.80x = 2,714,354,161.09
  5. Step 5: Solve for x
    x = 2,714,354,161.09/66,649.80
  6. Step 6: Final answer
    x = 40,725.62

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1.5x scale

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.