Home / 57,818.20-79,759.89-38,698.78

Finding the Fourth Proportional to 57,818.20, 79,759.89 and 38,698.78

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Solution

The fourth proportional to 57,818.20, 79,759.89 and 38,698.78 is: 53,384.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,818.20 : 79,759.89 = 38,698.78 : x
  2. Step 2: Convert to fraction form
    57,818.20/79,759.89 = 38,698.78/x
  3. Step 3: Cross multiply
    57,818.20x = 79,759.89 × 38,698.78
  4. Step 4: Simplify right side
    57,818.20x = 3,086,610,037.13
  5. Step 5: Solve for x
    x = 3,086,610,037.13/57,818.20
  6. Step 6: Final answer
    x = 53,384.75

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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.