Home / 67,867.74-101,808.09-21,108.06

Finding the Fourth Proportional to 67,867.74, 101,808.09 and 21,108.06

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Solution

The fourth proportional to 67,867.74, 101,808.09 and 21,108.06 is: 31,664.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,867.74 : 101,808.09 = 21,108.06 : x
  2. Step 2: Convert to fraction form
    67,867.74/101,808.09 = 21,108.06/x
  3. Step 3: Cross multiply
    67,867.74x = 101,808.09 × 21,108.06
  4. Step 4: Simplify right side
    67,867.74x = 2,148,971,272.21
  5. Step 5: Solve for x
    x = 2,148,971,272.21/67,867.74
  6. Step 6: Final answer
    x = 31,664.11

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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.