Home / 80,741.36-120,961.38-58,500.38

Finding the Fourth Proportional to 80,741.36, 120,961.38 and 58,500.38

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Solution

The fourth proportional to 80,741.36, 120,961.38 and 58,500.38 is: 87,641.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,741.36 : 120,961.38 = 58,500.38 : x
  2. Step 2: Convert to fraction form
    80,741.36/120,961.38 = 58,500.38/x
  3. Step 3: Cross multiply
    80,741.36x = 120,961.38 × 58,500.38
  4. Step 4: Simplify right side
    80,741.36x = 7,076,286,695.32
  5. Step 5: Solve for x
    x = 7,076,286,695.32/80,741.36
  6. Step 6: Final answer
    x = 87,641.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.