Home / 66,609.89-99,921.55-21,629.36

Finding the Fourth Proportional to 66,609.89, 99,921.55 and 21,629.36

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Solution

The fourth proportional to 66,609.89, 99,921.55 and 21,629.36 is: 32,446.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,609.89 : 99,921.55 = 21,629.36 : x
  2. Step 2: Convert to fraction form
    66,609.89/99,921.55 = 21,629.36/x
  3. Step 3: Cross multiply
    66,609.89x = 99,921.55 × 21,629.36
  4. Step 4: Simplify right side
    66,609.89x = 2,161,239,225.64
  5. Step 5: Solve for x
    x = 2,161,239,225.64/66,609.89
  6. Step 6: Final answer
    x = 32,446.22

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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.