Home / 75,008.72-103,405.20-51,104.82

Finding the Fourth Proportional to 75,008.72, 103,405.20 and 51,104.82

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Solution

The fourth proportional to 75,008.72, 103,405.20 and 51,104.82 is: 70,451.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,008.72 : 103,405.20 = 51,104.82 : x
  2. Step 2: Convert to fraction form
    75,008.72/103,405.20 = 51,104.82/x
  3. Step 3: Cross multiply
    75,008.72x = 103,405.20 × 51,104.82
  4. Step 4: Simplify right side
    75,008.72x = 5,284,504,133.06
  5. Step 5: Solve for x
    x = 5,284,504,133.06/75,008.72
  6. Step 6: Final answer
    x = 70,451.86

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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.