Home / 55,538.20-76,644.60-30,387.68

Finding the Fourth Proportional to 55,538.20, 76,644.60 and 30,387.68

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Solution

The fourth proportional to 55,538.20, 76,644.60 and 30,387.68 is: 41,936.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,538.20 : 76,644.60 = 30,387.68 : x
  2. Step 2: Convert to fraction form
    55,538.20/76,644.60 = 30,387.68/x
  3. Step 3: Cross multiply
    55,538.20x = 76,644.60 × 30,387.68
  4. Step 4: Simplify right side
    55,538.20x = 2,329,051,578.53
  5. Step 5: Solve for x
    x = 2,329,051,578.53/55,538.20
  6. Step 6: Final answer
    x = 41,936.03

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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.