Home / 75,121.13-103,667.15-41,587.13

Finding the Fourth Proportional to 75,121.13, 103,667.15 and 41,587.13

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Solution

The fourth proportional to 75,121.13, 103,667.15 and 41,587.13 is: 57,390.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.13 : 103,667.15 = 41,587.13 : x
  2. Step 2: Convert to fraction form
    75,121.13/103,667.15 = 41,587.13/x
  3. Step 3: Cross multiply
    75,121.13x = 103,667.15 × 41,587.13
  4. Step 4: Simplify right side
    75,121.13x = 4,311,219,243.78
  5. Step 5: Solve for x
    x = 4,311,219,243.78/75,121.13
  6. Step 6: Final answer
    x = 57,390.23

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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.