Home / 89,778.48-123,889.30-49,492.18

Finding the Fourth Proportional to 89,778.48, 123,889.30 and 49,492.18

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Solution

The fourth proportional to 89,778.48, 123,889.30 and 49,492.18 is: 68,296.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,778.48 : 123,889.30 = 49,492.18 : x
  2. Step 2: Convert to fraction form
    89,778.48/123,889.30 = 49,492.18/x
  3. Step 3: Cross multiply
    89,778.48x = 123,889.30 × 49,492.18
  4. Step 4: Simplify right side
    89,778.48x = 6,131,551,535.67
  5. Step 5: Solve for x
    x = 6,131,551,535.67/89,778.48
  6. Step 6: Final answer
    x = 68,296.45

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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.