Home / 67,865.08-101,796.54-21,120.52

Finding the Fourth Proportional to 67,865.08, 101,796.54 and 21,120.52

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Solution

The fourth proportional to 67,865.08, 101,796.54 and 21,120.52 is: 31,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,865.08 : 101,796.54 = 21,120.52 : x
  2. Step 2: Convert to fraction form
    67,865.08/101,796.54 = 21,120.52/x
  3. Step 3: Cross multiply
    67,865.08x = 101,796.54 × 21,120.52
  4. Step 4: Simplify right side
    67,865.08x = 2,149,995,859.00
  5. Step 5: Solve for x
    x = 2,149,995,859.00/67,865.08
  6. Step 6: Final answer
    x = 31,680.44

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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.