Home / 80,985.88-111,709.92-52,294.60

Finding the Fourth Proportional to 80,985.88, 111,709.92 and 52,294.60

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Solution

The fourth proportional to 80,985.88, 111,709.92 and 52,294.60 is: 72,133.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,985.88 : 111,709.92 = 52,294.60 : x
  2. Step 2: Convert to fraction form
    80,985.88/111,709.92 = 52,294.60/x
  3. Step 3: Cross multiply
    80,985.88x = 111,709.92 × 52,294.60
  4. Step 4: Simplify right side
    80,985.88x = 5,841,825,582.43
  5. Step 5: Solve for x
    x = 5,841,825,582.43/80,985.88
  6. Step 6: Final answer
    x = 72,133.88

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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.