Home / 56,137.38-77,469.65-30,986.88

Finding the Fourth Proportional to 56,137.38, 77,469.65 and 30,986.88

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Solution

The fourth proportional to 56,137.38, 77,469.65 and 30,986.88 is: 42,761.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,137.38 : 77,469.65 = 30,986.88 : x
  2. Step 2: Convert to fraction form
    56,137.38/77,469.65 = 30,986.88/x
  3. Step 3: Cross multiply
    56,137.38x = 77,469.65 × 30,986.88
  4. Step 4: Simplify right side
    56,137.38x = 2,400,542,748.19
  5. Step 5: Solve for x
    x = 2,400,542,748.19/56,137.38
  6. Step 6: Final answer
    x = 42,761.93

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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.