Home / 89,039.21-122,874.11-48,755.51

Finding the Fourth Proportional to 89,039.21, 122,874.11 and 48,755.51

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Solution

The fourth proportional to 89,039.21, 122,874.11 and 48,755.51 is: 67,282.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,039.21 : 122,874.11 = 48,755.51 : x
  2. Step 2: Convert to fraction form
    89,039.21/122,874.11 = 48,755.51/x
  3. Step 3: Cross multiply
    89,039.21x = 122,874.11 × 48,755.51
  4. Step 4: Simplify right side
    89,039.21x = 5,990,789,040.70
  5. Step 5: Solve for x
    x = 5,990,789,040.70/89,039.21
  6. Step 6: Final answer
    x = 67,282.60

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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.