Home / 55,727.68-76,900.44-30,578.80

Finding the Fourth Proportional to 55,727.68, 76,900.44 and 30,578.80

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Solution

The fourth proportional to 55,727.68, 76,900.44 and 30,578.80 is: 42,196.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,727.68 : 76,900.44 = 30,578.80 : x
  2. Step 2: Convert to fraction form
    55,727.68/76,900.44 = 30,578.80/x
  3. Step 3: Cross multiply
    55,727.68x = 76,900.44 × 30,578.80
  4. Step 4: Simplify right side
    55,727.68x = 2,351,523,174.67
  5. Step 5: Solve for x
    x = 2,351,523,174.67/55,727.68
  6. Step 6: Final answer
    x = 42,196.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.