Home / 75,109.42-103,540.57-57,173.18

Finding the Fourth Proportional to 75,109.42, 103,540.57 and 57,173.18

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Solution

The fourth proportional to 75,109.42, 103,540.57 and 57,173.18 is: 78,814.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,109.42 : 103,540.57 = 57,173.18 : x
  2. Step 2: Convert to fraction form
    75,109.42/103,540.57 = 57,173.18/x
  3. Step 3: Cross multiply
    75,109.42x = 103,540.57 × 57,173.18
  4. Step 4: Simplify right side
    75,109.42x = 5,919,743,645.91
  5. Step 5: Solve for x
    x = 5,919,743,645.91/75,109.42
  6. Step 6: Final answer
    x = 78,814.93

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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.