Home / 65,768.15-90,738.53-40,247.90

Finding the Fourth Proportional to 65,768.15, 90,738.53 and 40,247.90

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Solution

The fourth proportional to 65,768.15, 90,738.53 and 40,247.90 is: 55,528.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,768.15 : 90,738.53 = 40,247.90 : x
  2. Step 2: Convert to fraction form
    65,768.15/90,738.53 = 40,247.90/x
  3. Step 3: Cross multiply
    65,768.15x = 90,738.53 × 40,247.90
  4. Step 4: Simplify right side
    65,768.15x = 3,652,035,628.26
  5. Step 5: Solve for x
    x = 3,652,035,628.26/65,768.15
  6. Step 6: Final answer
    x = 55,528.94

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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.