Home / 81,270.83-121,867.97-52,761.66

Finding the Fourth Proportional to 81,270.83, 121,867.97 and 52,761.66

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Solution

The fourth proportional to 81,270.83, 121,867.97 and 52,761.66 is: 79,117.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,270.83 : 121,867.97 = 52,761.66 : x
  2. Step 2: Convert to fraction form
    81,270.83/121,867.97 = 52,761.66/x
  3. Step 3: Cross multiply
    81,270.83x = 121,867.97 × 52,761.66
  4. Step 4: Simplify right side
    81,270.83x = 6,429,956,134.22
  5. Step 5: Solve for x
    x = 6,429,956,134.22/81,270.83
  6. Step 6: Final answer
    x = 79,117.64

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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.