Home / 66,231.09-91,366.77-39,354.57

Finding the Fourth Proportional to 66,231.09, 91,366.77 and 39,354.57

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Solution

The fourth proportional to 66,231.09, 91,366.77 and 39,354.57 is: 54,290.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,231.09 : 91,366.77 = 39,354.57 : x
  2. Step 2: Convert to fraction form
    66,231.09/91,366.77 = 39,354.57/x
  3. Step 3: Cross multiply
    66,231.09x = 91,366.77 × 39,354.57
  4. Step 4: Simplify right side
    66,231.09x = 3,595,699,945.64
  5. Step 5: Solve for x
    x = 3,595,699,945.64/66,231.09
  6. Step 6: Final answer
    x = 54,290.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.