Home / 67,398.04-101,111.82-20,654.56

Finding the Fourth Proportional to 67,398.04, 101,111.82 and 20,654.56

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Solution

The fourth proportional to 67,398.04, 101,111.82 and 20,654.56 is: 30,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,398.04 : 101,111.82 = 20,654.56 : x
  2. Step 2: Convert to fraction form
    67,398.04/101,111.82 = 20,654.56/x
  3. Step 3: Cross multiply
    67,398.04x = 101,111.82 × 20,654.56
  4. Step 4: Simplify right side
    67,398.04x = 2,088,420,152.90
  5. Step 5: Solve for x
    x = 2,088,420,152.90/67,398.04
  6. Step 6: Final answer
    x = 30,986.36

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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.