Home / 73,131.09-109,688.11-20,545.08

Finding the Fourth Proportional to 73,131.09, 109,688.11 and 20,545.08

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Solution

The fourth proportional to 73,131.09, 109,688.11 and 20,545.08 is: 30,815.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,131.09 : 109,688.11 = 20,545.08 : x
  2. Step 2: Convert to fraction form
    73,131.09/109,688.11 = 20,545.08/x
  3. Step 3: Cross multiply
    73,131.09x = 109,688.11 × 20,545.08
  4. Step 4: Simplify right side
    73,131.09x = 2,253,550,995.00
  5. Step 5: Solve for x
    x = 2,253,550,995.00/73,131.09
  6. Step 6: Final answer
    x = 30,815.23

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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.