Home / 89,034.75-122,868-49,290.75

Finding the Fourth Proportional to 89,034.75, 122,868 and 49,290.75

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Solution

The fourth proportional to 89,034.75, 122,868 and 49,290.75 is: 68,021.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,034.75 : 122,868 = 49,290.75 : x
  2. Step 2: Convert to fraction form
    89,034.75/122,868 = 49,290.75/x
  3. Step 3: Cross multiply
    89,034.75x = 122,868 × 49,290.75
  4. Step 4: Simplify right side
    89,034.75x = 6,056,255,871
  5. Step 5: Solve for x
    x = 6,056,255,871/89,034.75
  6. Step 6: Final answer
    x = 68,021.26

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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.