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Finding the Fourth Proportional to 90,510, 124,902.21 and 50,223.07

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Solution

The fourth proportional to 90,510, 124,902.21 and 50,223.07 is: 69,306.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,510 : 124,902.21 = 50,223.07 : x
  2. Step 2: Convert to fraction form
    90,510/124,902.21 = 50,223.07/x
  3. Step 3: Cross multiply
    90,510x = 124,902.21 × 50,223.07
  4. Step 4: Simplify right side
    90,510x = 6,272,972,435.98
  5. Step 5: Solve for x
    x = 6,272,972,435.98/90,510
  6. Step 6: Final answer
    x = 69,306.95

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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.