Home / 55,164.64-76,140.80-31,305.68

Finding the Fourth Proportional to 55,164.64, 76,140.80 and 31,305.68

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Solution

The fourth proportional to 55,164.64, 76,140.80 and 31,305.68 is: 43,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,164.64 : 76,140.80 = 31,305.68 : x
  2. Step 2: Convert to fraction form
    55,164.64/76,140.80 = 31,305.68/x
  3. Step 3: Cross multiply
    55,164.64x = 76,140.80 × 31,305.68
  4. Step 4: Simplify right side
    55,164.64x = 2,383,639,519.74
  5. Step 5: Solve for x
    x = 2,383,639,519.74/55,164.64
  6. Step 6: Final answer
    x = 43,209.55

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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.