Home / 81,411.20-122,094.24-28,813.76

Finding the Fourth Proportional to 81,411.20, 122,094.24 and 28,813.76

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Solution

The fourth proportional to 81,411.20, 122,094.24 and 28,813.76 is: 43,212.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,411.20 : 122,094.24 = 28,813.76 : x
  2. Step 2: Convert to fraction form
    81,411.20/122,094.24 = 28,813.76/x
  3. Step 3: Cross multiply
    81,411.20x = 122,094.24 × 28,813.76
  4. Step 4: Simplify right side
    81,411.20x = 3,517,994,128.74
  5. Step 5: Solve for x
    x = 3,517,994,128.74/81,411.20
  6. Step 6: Final answer
    x = 43,212.66

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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.