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Finding the Fourth Proportional to 74,661.76, 103,003.68 and 51,994.72

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Solution

The fourth proportional to 74,661.76, 103,003.68 and 51,994.72 is: 71,732.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,661.76 : 103,003.68 = 51,994.72 : x
  2. Step 2: Convert to fraction form
    74,661.76/103,003.68 = 51,994.72/x
  3. Step 3: Cross multiply
    74,661.76x = 103,003.68 × 51,994.72
  4. Step 4: Simplify right side
    74,661.76x = 5,355,647,500.57
  5. Step 5: Solve for x
    x = 5,355,647,500.57/74,661.76
  6. Step 6: Final answer
    x = 71,732.14

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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.