Home / 65,768.24-90,739.49-40,248

Finding the Fourth Proportional to 65,768.24, 90,739.49 and 40,248

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Solution

The fourth proportional to 65,768.24, 90,739.49 and 40,248 is: 55,529.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,768.24 : 90,739.49 = 40,248 : x
  2. Step 2: Convert to fraction form
    65,768.24/90,739.49 = 40,248/x
  3. Step 3: Cross multiply
    65,768.24x = 90,739.49 × 40,248
  4. Step 4: Simplify right side
    65,768.24x = 3,652,082,993.52
  5. Step 5: Solve for x
    x = 3,652,082,993.52/65,768.24
  6. Step 6: Final answer
    x = 55,529.58

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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.