Home / 66,117.20-99,190.38-21,742.16

Finding the Fourth Proportional to 66,117.20, 99,190.38 and 21,742.16

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Solution

The fourth proportional to 66,117.20, 99,190.38 and 21,742.16 is: 32,618.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,117.20 : 99,190.38 = 21,742.16 : x
  2. Step 2: Convert to fraction form
    66,117.20/99,190.38 = 21,742.16/x
  3. Step 3: Cross multiply
    66,117.20x = 99,190.38 × 21,742.16
  4. Step 4: Simplify right side
    66,117.20x = 2,156,613,112.42
  5. Step 5: Solve for x
    x = 2,156,613,112.42/66,117.20
  6. Step 6: Final answer
    x = 32,618.03

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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.