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Finding the Fourth Proportional to 81,704.39, 112,495.73 and 74,230.79

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Solution

The fourth proportional to 81,704.39, 112,495.73 and 74,230.79 is: 102,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,704.39 : 112,495.73 = 74,230.79 : x
  2. Step 2: Convert to fraction form
    81,704.39/112,495.73 = 74,230.79/x
  3. Step 3: Cross multiply
    81,704.39x = 112,495.73 × 74,230.79
  4. Step 4: Simplify right side
    81,704.39x = 8,350,645,975.89
  5. Step 5: Solve for x
    x = 8,350,645,975.89/81,704.39
  6. Step 6: Final answer
    x = 102,205.60

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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.