Home / 67,983.18-101,989.35-28,517.55

Finding the Fourth Proportional to 67,983.18, 101,989.35 and 28,517.55

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Solution

The fourth proportional to 67,983.18, 101,989.35 and 28,517.55 is: 42,782.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,983.18 : 101,989.35 = 28,517.55 : x
  2. Step 2: Convert to fraction form
    67,983.18/101,989.35 = 28,517.55/x
  3. Step 3: Cross multiply
    67,983.18x = 101,989.35 × 28,517.55
  4. Step 4: Simplify right side
    67,983.18x = 2,908,486,388.09
  5. Step 5: Solve for x
    x = 2,908,486,388.09/67,983.18
  6. Step 6: Final answer
    x = 42,782.44

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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.