Home / 67,612.08-101,419.65-20,865

Finding the Fourth Proportional to 67,612.08, 101,419.65 and 20,865

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Solution

The fourth proportional to 67,612.08, 101,419.65 and 20,865 is: 31,297.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,612.08 : 101,419.65 = 20,865 : x
  2. Step 2: Convert to fraction form
    67,612.08/101,419.65 = 20,865/x
  3. Step 3: Cross multiply
    67,612.08x = 101,419.65 × 20,865
  4. Step 4: Simplify right side
    67,612.08x = 2,116,120,997.25
  5. Step 5: Solve for x
    x = 2,116,120,997.25/67,612.08
  6. Step 6: Final answer
    x = 31,297.97

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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.