Home / 65,520.72-90,390.12-41,634.57

Finding the Fourth Proportional to 65,520.72, 90,390.12 and 41,634.57

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Solution

The fourth proportional to 65,520.72, 90,390.12 and 41,634.57 is: 57,437.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,520.72 : 90,390.12 = 41,634.57 : x
  2. Step 2: Convert to fraction form
    65,520.72/90,390.12 = 41,634.57/x
  3. Step 3: Cross multiply
    65,520.72x = 90,390.12 × 41,634.57
  4. Step 4: Simplify right side
    65,520.72x = 3,763,353,778.45
  5. Step 5: Solve for x
    x = 3,763,353,778.45/65,520.72
  6. Step 6: Final answer
    x = 57,437.61

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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.