Home / 90,015.08-135,107.36-45,673.66

Finding the Fourth Proportional to 90,015.08, 135,107.36 and 45,673.66

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Solution

The fourth proportional to 90,015.08, 135,107.36 and 45,673.66 is: 68,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,015.08 : 135,107.36 = 45,673.66 : x
  2. Step 2: Convert to fraction form
    90,015.08/135,107.36 = 45,673.66/x
  3. Step 3: Cross multiply
    90,015.08x = 135,107.36 × 45,673.66
  4. Step 4: Simplify right side
    90,015.08x = 6,170,847,232.87
  5. Step 5: Solve for x
    x = 6,170,847,232.87/90,015.08
  6. Step 6: Final answer
    x = 68,553.48

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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.