Home / 43,331-64,988.28-21,122.04

Finding the Fourth Proportional to 43,331, 64,988.28 and 21,122.04

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Solution

The fourth proportional to 43,331, 64,988.28 and 21,122.04 is: 31,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,331 : 64,988.28 = 21,122.04 : x
  2. Step 2: Convert to fraction form
    43,331/64,988.28 = 21,122.04/x
  3. Step 3: Cross multiply
    43,331x = 64,988.28 × 21,122.04
  4. Step 4: Simplify right side
    43,331x = 1,372,685,049.69
  5. Step 5: Solve for x
    x = 1,372,685,049.69/43,331
  6. Step 6: Final answer
    x = 31,679.05

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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.