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Finding the Fourth Proportional to 55,369.73, 83,065.53 and 20,309.69

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Solution

The fourth proportional to 55,369.73, 83,065.53 and 20,309.69 is: 30,468.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,369.73 : 83,065.53 = 20,309.69 : x
  2. Step 2: Convert to fraction form
    55,369.73/83,065.53 = 20,309.69/x
  3. Step 3: Cross multiply
    55,369.73x = 83,065.53 × 20,309.69
  4. Step 4: Simplify right side
    55,369.73x = 1,687,035,163.99
  5. Step 5: Solve for x
    x = 1,687,035,163.99/55,369.73
  6. Step 6: Final answer
    x = 30,468.55

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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.