Home / 75,121.37-103,667.26-43,290.20

Finding the Fourth Proportional to 75,121.37, 103,667.26 and 43,290.20

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Solution

The fourth proportional to 75,121.37, 103,667.26 and 43,290.20 is: 59,740.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.37 : 103,667.26 = 43,290.20 : x
  2. Step 2: Convert to fraction form
    75,121.37/103,667.26 = 43,290.20/x
  3. Step 3: Cross multiply
    75,121.37x = 103,667.26 × 43,290.20
  4. Step 4: Simplify right side
    75,121.37x = 4,487,776,418.85
  5. Step 5: Solve for x
    x = 4,487,776,418.85/75,121.37
  6. Step 6: Final answer
    x = 59,740.34

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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.