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Finding the Fourth Proportional to 74,797.89, 103,657.78 and 73,378.57

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Solution

The fourth proportional to 74,797.89, 103,657.78 and 73,378.57 is: 101,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,797.89 : 103,657.78 = 73,378.57 : x
  2. Step 2: Convert to fraction form
    74,797.89/103,657.78 = 73,378.57/x
  3. Step 3: Cross multiply
    74,797.89x = 103,657.78 × 73,378.57
  4. Step 4: Simplify right side
    74,797.89x = 7,606,259,665.77
  5. Step 5: Solve for x
    x = 7,606,259,665.77/74,797.89
  6. Step 6: Final answer
    x = 101,690.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.