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Finding the Fourth Proportional to 66,168.63, 99,260.24 and 21,194.12

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Solution

The fourth proportional to 66,168.63, 99,260.24 and 21,194.12 is: 31,793.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,168.63 : 99,260.24 = 21,194.12 : x
  2. Step 2: Convert to fraction form
    66,168.63/99,260.24 = 21,194.12/x
  3. Step 3: Cross multiply
    66,168.63x = 99,260.24 × 21,194.12
  4. Step 4: Simplify right side
    66,168.63x = 2,103,733,579.97
  5. Step 5: Solve for x
    x = 2,103,733,579.97/66,168.63
  6. Step 6: Final answer
    x = 31,793.52

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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.