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Finding the Fourth Proportional to 90,017.84, 124,227.13 and 49,734.20

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Solution

The fourth proportional to 90,017.84, 124,227.13 and 49,734.20 is: 68,634.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,017.84 : 124,227.13 = 49,734.20 : x
  2. Step 2: Convert to fraction form
    90,017.84/124,227.13 = 49,734.20/x
  3. Step 3: Cross multiply
    90,017.84x = 124,227.13 × 49,734.20
  4. Step 4: Simplify right side
    90,017.84x = 6,178,336,928.85
  5. Step 5: Solve for x
    x = 6,178,336,928.85/90,017.84
  6. Step 6: Final answer
    x = 68,634.58

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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.