Home / 67,765.20-101,511.72-38,138.64

Finding the Fourth Proportional to 67,765.20, 101,511.72 and 38,138.64

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Solution

The fourth proportional to 67,765.20, 101,511.72 and 38,138.64 is: 57,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,765.20 : 101,511.72 = 38,138.64 : x
  2. Step 2: Convert to fraction form
    67,765.20/101,511.72 = 38,138.64/x
  3. Step 3: Cross multiply
    67,765.20x = 101,511.72 × 38,138.64
  4. Step 4: Simplify right side
    67,765.20x = 3,871,518,944.86
  5. Step 5: Solve for x
    x = 3,871,518,944.86/67,765.20
  6. Step 6: Final answer
    x = 57,131.37

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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.