Home / 89,416.40-123,381.20-49,131.86

Finding the Fourth Proportional to 89,416.40, 123,381.20 and 49,131.86

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Solution

The fourth proportional to 89,416.40, 123,381.20 and 49,131.86 is: 67,794.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,416.40 : 123,381.20 = 49,131.86 : x
  2. Step 2: Convert to fraction form
    89,416.40/123,381.20 = 49,131.86/x
  3. Step 3: Cross multiply
    89,416.40x = 123,381.20 × 49,131.86
  4. Step 4: Simplify right side
    89,416.40x = 6,061,947,845.03
  5. Step 5: Solve for x
    x = 6,061,947,845.03/89,416.40
  6. Step 6: Final answer
    x = 67,794.59

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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.