Home / 65,730.20-90,709.48-40,236.04

Finding the Fourth Proportional to 65,730.20, 90,709.48 and 40,236.04

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Solution

The fourth proportional to 65,730.20, 90,709.48 and 40,236.04 is: 55,526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,730.20 : 90,709.48 = 40,236.04 : x
  2. Step 2: Convert to fraction form
    65,730.20/90,709.48 = 40,236.04/x
  3. Step 3: Cross multiply
    65,730.20x = 90,709.48 × 40,236.04
  4. Step 4: Simplify right side
    65,730.20x = 3,649,790,265.66
  5. Step 5: Solve for x
    x = 3,649,790,265.66/65,730.20
  6. Step 6: Final answer
    x = 55,526.84

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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.