Home / 55,627.20-76,765.12-30,476.80

Finding the Fourth Proportional to 55,627.20, 76,765.12 and 30,476.80

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Solution

The fourth proportional to 55,627.20, 76,765.12 and 30,476.80 is: 42,057.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,627.20 : 76,765.12 = 30,476.80 : x
  2. Step 2: Convert to fraction form
    55,627.20/76,765.12 = 30,476.80/x
  3. Step 3: Cross multiply
    55,627.20x = 76,765.12 × 30,476.80
  4. Step 4: Simplify right side
    55,627.20x = 2,339,555,209.22
  5. Step 5: Solve for x
    x = 2,339,555,209.22/55,627.20
  6. Step 6: Final answer
    x = 42,057.76

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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.