Home / 90,645.32-135,921.29-40,682.58

Finding the Fourth Proportional to 90,645.32, 135,921.29 and 40,682.58

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Solution

The fourth proportional to 90,645.32, 135,921.29 and 40,682.58 is: 61,002.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,645.32 : 135,921.29 = 40,682.58 : x
  2. Step 2: Convert to fraction form
    90,645.32/135,921.29 = 40,682.58/x
  3. Step 3: Cross multiply
    90,645.32x = 135,921.29 × 40,682.58
  4. Step 4: Simplify right side
    90,645.32x = 5,529,628,550.72
  5. Step 5: Solve for x
    x = 5,529,628,550.72/90,645.32
  6. Step 6: Final answer
    x = 61,002.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.