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Finding the Fourth Proportional to 71,109.18, 106,663.77 and 18,523.98

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Solution

The fourth proportional to 71,109.18, 106,663.77 and 18,523.98 is: 27,785.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,109.18 : 106,663.77 = 18,523.98 : x
  2. Step 2: Convert to fraction form
    71,109.18/106,663.77 = 18,523.98/x
  3. Step 3: Cross multiply
    71,109.18x = 106,663.77 × 18,523.98
  4. Step 4: Simplify right side
    71,109.18x = 1,975,837,542.20
  5. Step 5: Solve for x
    x = 1,975,837,542.20/71,109.18
  6. Step 6: Final answer
    x = 27,785.97

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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.