Home / 66,190.25-91,340.30-37,890.47

Finding the Fourth Proportional to 66,190.25, 91,340.30 and 37,890.47

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Solution

The fourth proportional to 66,190.25, 91,340.30 and 37,890.47 is: 52,287.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,190.25 : 91,340.30 = 37,890.47 : x
  2. Step 2: Convert to fraction form
    66,190.25/91,340.30 = 37,890.47/x
  3. Step 3: Cross multiply
    66,190.25x = 91,340.30 × 37,890.47
  4. Step 4: Simplify right side
    66,190.25x = 3,460,926,250.79
  5. Step 5: Solve for x
    x = 3,460,926,250.79/66,190.25
  6. Step 6: Final answer
    x = 52,287.56

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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.