Home / 81,368.22-122,068.70-28,814.61

Finding the Fourth Proportional to 81,368.22, 122,068.70 and 28,814.61

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Solution

The fourth proportional to 81,368.22, 122,068.70 and 28,814.61 is: 43,227.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,368.22 : 122,068.70 = 28,814.61 : x
  2. Step 2: Convert to fraction form
    81,368.22/122,068.70 = 28,814.61/x
  3. Step 3: Cross multiply
    81,368.22x = 122,068.70 × 28,814.61
  4. Step 4: Simplify right side
    81,368.22x = 3,517,361,983.71
  5. Step 5: Solve for x
    x = 3,517,361,983.71/81,368.22
  6. Step 6: Final answer
    x = 43,227.71

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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.