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Finding the Fourth Proportional to 73,054, 100,815.24 and 39,520.72

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Solution

The fourth proportional to 73,054, 100,815.24 and 39,520.72 is: 54,538.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,054 : 100,815.24 = 39,520.72 : x
  2. Step 2: Convert to fraction form
    73,054/100,815.24 = 39,520.72/x
  3. Step 3: Cross multiply
    73,054x = 100,815.24 × 39,520.72
  4. Step 4: Simplify right side
    73,054x = 3,984,290,871.77
  5. Step 5: Solve for x
    x = 3,984,290,871.77/73,054
  6. Step 6: Final answer
    x = 54,538.98

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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.