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Finding the Fourth Proportional to 90,278.67, 124,583.03 and 49,991.57

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Solution

The fourth proportional to 90,278.67, 124,583.03 and 49,991.57 is: 68,987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,278.67 : 124,583.03 = 49,991.57 : x
  2. Step 2: Convert to fraction form
    90,278.67/124,583.03 = 49,991.57/x
  3. Step 3: Cross multiply
    90,278.67x = 124,583.03 × 49,991.57
  4. Step 4: Simplify right side
    90,278.67x = 6,228,101,234.31
  5. Step 5: Solve for x
    x = 6,228,101,234.31/90,278.67
  6. Step 6: Final answer
    x = 68,987.51

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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.