Home / 81,738.76-122,607.35-48,434.85

Finding the Fourth Proportional to 81,738.76, 122,607.35 and 48,434.85

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Solution

The fourth proportional to 81,738.76, 122,607.35 and 48,434.85 is: 72,651.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,738.76 : 122,607.35 = 48,434.85 : x
  2. Step 2: Convert to fraction form
    81,738.76/122,607.35 = 48,434.85/x
  3. Step 3: Cross multiply
    81,738.76x = 122,607.35 × 48,434.85
  4. Step 4: Simplify right side
    81,738.76x = 5,938,468,606.15
  5. Step 5: Solve for x
    x = 5,938,468,606.15/81,738.76
  6. Step 6: Final answer
    x = 72,651.81

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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.