Home / 75,990.10-113,991.63-19,837.66

Finding the Fourth Proportional to 75,990.10, 113,991.63 and 19,837.66

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Solution

The fourth proportional to 75,990.10, 113,991.63 and 19,837.66 is: 29,758.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,990.10 : 113,991.63 = 19,837.66 : x
  2. Step 2: Convert to fraction form
    75,990.10/113,991.63 = 19,837.66/x
  3. Step 3: Cross multiply
    75,990.10x = 113,991.63 × 19,837.66
  4. Step 4: Simplify right side
    75,990.10x = 2,261,327,198.79
  5. Step 5: Solve for x
    x = 2,261,327,198.79/75,990.10
  6. Step 6: Final answer
    x = 29,758.18

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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.