Home / 89,763.75-123,872.33-49,477.65

Finding the Fourth Proportional to 89,763.75, 123,872.33 and 49,477.65

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Solution

The fourth proportional to 89,763.75, 123,872.33 and 49,477.65 is: 68,278.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,763.75 : 123,872.33 = 49,477.65 : x
  2. Step 2: Convert to fraction form
    89,763.75/123,872.33 = 49,477.65/x
  3. Step 3: Cross multiply
    89,763.75x = 123,872.33 × 49,477.65
  4. Step 4: Simplify right side
    89,763.75x = 6,128,911,541.04
  5. Step 5: Solve for x
    x = 6,128,911,541.04/89,763.75
  6. Step 6: Final answer
    x = 68,278.25

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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.