Home / 81,135.47-111,944.77-55,648.15

Finding the Fourth Proportional to 81,135.47, 111,944.77 and 55,648.15

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Solution

The fourth proportional to 81,135.47, 111,944.77 and 55,648.15 is: 76,779.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,135.47 : 111,944.77 = 55,648.15 : x
  2. Step 2: Convert to fraction form
    81,135.47/111,944.77 = 55,648.15/x
  3. Step 3: Cross multiply
    81,135.47x = 111,944.77 × 55,648.15
  4. Step 4: Simplify right side
    81,135.47x = 6,229,518,933.69
  5. Step 5: Solve for x
    x = 6,229,518,933.69/81,135.47
  6. Step 6: Final answer
    x = 76,779.23

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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.