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Finding the Fourth Proportional to 71,561.56, 107,345.25 and 18,254.92

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Solution

The fourth proportional to 71,561.56, 107,345.25 and 18,254.92 is: 27,383.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,561.56 : 107,345.25 = 18,254.92 : x
  2. Step 2: Convert to fraction form
    71,561.56/107,345.25 = 18,254.92/x
  3. Step 3: Cross multiply
    71,561.56x = 107,345.25 × 18,254.92
  4. Step 4: Simplify right side
    71,561.56x = 1,959,578,951.13
  5. Step 5: Solve for x
    x = 1,959,578,951.13/71,561.56
  6. Step 6: Final answer
    x = 27,383.12

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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.