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Finding the Fourth Proportional to 102,939.73, 154,320.73 and 39,804.08

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Solution

The fourth proportional to 102,939.73, 154,320.73 and 39,804.08 is: 59,671.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,939.73 : 154,320.73 = 39,804.08 : x
  2. Step 2: Convert to fraction form
    102,939.73/154,320.73 = 39,804.08/x
  3. Step 3: Cross multiply
    102,939.73x = 154,320.73 × 39,804.08
  4. Step 4: Simplify right side
    102,939.73x = 6,142,594,682.58
  5. Step 5: Solve for x
    x = 6,142,594,682.58/102,939.73
  6. Step 6: Final answer
    x = 59,671.76

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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.