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Finding the Fourth Proportional to 71,403.93, 107,116.83 and 18,817.52

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Solution

The fourth proportional to 71,403.93, 107,116.83 and 18,817.52 is: 28,229.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,403.93 : 107,116.83 = 18,817.52 : x
  2. Step 2: Convert to fraction form
    71,403.93/107,116.83 = 18,817.52/x
  3. Step 3: Cross multiply
    71,403.93x = 107,116.83 × 18,817.52
  4. Step 4: Simplify right side
    71,403.93x = 2,015,672,555.28
  5. Step 5: Solve for x
    x = 2,015,672,555.28/71,403.93
  6. Step 6: Final answer
    x = 28,229.15

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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.