Home / 83,775.75-115,610.54-47,977.61

Finding the Fourth Proportional to 83,775.75, 115,610.54 and 47,977.61

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Solution

The fourth proportional to 83,775.75, 115,610.54 and 47,977.61 is: 66,209.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,775.75 : 115,610.54 = 47,977.61 : x
  2. Step 2: Convert to fraction form
    83,775.75/115,610.54 = 47,977.61/x
  3. Step 3: Cross multiply
    83,775.75x = 115,610.54 × 47,977.61
  4. Step 4: Simplify right side
    83,775.75x = 5,546,716,582.07
  5. Step 5: Solve for x
    x = 5,546,716,582.07/83,775.75
  6. Step 6: Final answer
    x = 66,209.09

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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.