Home / 66,207.20-91,359.09-39,344.54

Finding the Fourth Proportional to 66,207.20, 91,359.09 and 39,344.54

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Solution

The fourth proportional to 66,207.20, 91,359.09 and 39,344.54 is: 54,291.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207.20 : 91,359.09 = 39,344.54 : x
  2. Step 2: Convert to fraction form
    66,207.20/91,359.09 = 39,344.54/x
  3. Step 3: Cross multiply
    66,207.20x = 91,359.09 × 39,344.54
  4. Step 4: Simplify right side
    66,207.20x = 3,594,480,914.07
  5. Step 5: Solve for x
    x = 3,594,480,914.07/66,207.20
  6. Step 6: Final answer
    x = 54,291.39

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1.5x scale

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.