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Finding the Fourth Proportional to 67,718.40, 101,480.40 and 49,809.30

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Solution

The fourth proportional to 67,718.40, 101,480.40 and 49,809.30 is: 74,642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,718.40 : 101,480.40 = 49,809.30 : x
  2. Step 2: Convert to fraction form
    67,718.40/101,480.40 = 49,809.30/x
  3. Step 3: Cross multiply
    67,718.40x = 101,480.40 × 49,809.30
  4. Step 4: Simplify right side
    67,718.40x = 5,054,667,687.72
  5. Step 5: Solve for x
    x = 5,054,667,687.72/67,718.40
  6. Step 6: Final answer
    x = 74,642.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.