Home / 67,109.17-100,663.78-19,724.27

Finding the Fourth Proportional to 67,109.17, 100,663.78 and 19,724.27

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Solution

The fourth proportional to 67,109.17, 100,663.78 and 19,724.27 is: 29,586.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,109.17 : 100,663.78 = 19,724.27 : x
  2. Step 2: Convert to fraction form
    67,109.17/100,663.78 = 19,724.27/x
  3. Step 3: Cross multiply
    67,109.17x = 100,663.78 × 19,724.27
  4. Step 4: Simplify right side
    67,109.17x = 1,985,519,778.49
  5. Step 5: Solve for x
    x = 1,985,519,778.49/67,109.17
  6. Step 6: Final answer
    x = 29,586.41

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1.5x scale

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.