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Finding the Fourth Proportional to 90,144.84, 124,397.46 and 49,859.40

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Solution

The fourth proportional to 90,144.84, 124,397.46 and 49,859.40 is: 68,804.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,144.84 : 124,397.46 = 49,859.40 : x
  2. Step 2: Convert to fraction form
    90,144.84/124,397.46 = 49,859.40/x
  3. Step 3: Cross multiply
    90,144.84x = 124,397.46 × 49,859.40
  4. Step 4: Simplify right side
    90,144.84x = 6,202,382,717.12
  5. Step 5: Solve for x
    x = 6,202,382,717.12/90,144.84
  6. Step 6: Final answer
    x = 68,804.63

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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.