Home / 89,778.36-123,889.16-49,492.06

Finding the Fourth Proportional to 89,778.36, 123,889.16 and 49,492.06

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Solution

The fourth proportional to 89,778.36, 123,889.16 and 49,492.06 is: 68,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,778.36 : 123,889.16 = 49,492.06 : x
  2. Step 2: Convert to fraction form
    89,778.36/123,889.16 = 49,492.06/x
  3. Step 3: Cross multiply
    89,778.36x = 123,889.16 × 49,492.06
  4. Step 4: Simplify right side
    89,778.36x = 6,131,529,740.07
  5. Step 5: Solve for x
    x = 6,131,529,740.07/89,778.36
  6. Step 6: Final answer
    x = 68,296.30

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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.