Home / 105,390.73-145,442.68-57,644.08

Finding the Fourth Proportional to 105,390.73, 145,442.68 and 57,644.08

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Solution

The fourth proportional to 105,390.73, 145,442.68 and 57,644.08 is: 79,550.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,390.73 : 145,442.68 = 57,644.08 : x
  2. Step 2: Convert to fraction form
    105,390.73/145,442.68 = 57,644.08/x
  3. Step 3: Cross multiply
    105,390.73x = 145,442.68 × 57,644.08
  4. Step 4: Simplify right side
    105,390.73x = 8,383,909,481.33
  5. Step 5: Solve for x
    x = 8,383,909,481.33/105,390.73
  6. Step 6: Final answer
    x = 79,550.73

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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.