Home / 89,763.39-123,872.88-49,477.20

Finding the Fourth Proportional to 89,763.39, 123,872.88 and 49,477.20

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Solution

The fourth proportional to 89,763.39, 123,872.88 and 49,477.20 is: 68,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,763.39 : 123,872.88 = 49,477.20 : x
  2. Step 2: Convert to fraction form
    89,763.39/123,872.88 = 49,477.20/x
  3. Step 3: Cross multiply
    89,763.39x = 123,872.88 × 49,477.20
  4. Step 4: Simplify right side
    89,763.39x = 6,128,883,258.34
  5. Step 5: Solve for x
    x = 6,128,883,258.34/89,763.39
  6. Step 6: Final answer
    x = 68,278.21

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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.