Home / 81,509.83-122,234.04-34,128.19

Finding the Fourth Proportional to 81,509.83, 122,234.04 and 34,128.19

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Solution

The fourth proportional to 81,509.83, 122,234.04 and 34,128.19 is: 51,179.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,509.83 : 122,234.04 = 34,128.19 : x
  2. Step 2: Convert to fraction form
    81,509.83/122,234.04 = 34,128.19/x
  3. Step 3: Cross multiply
    81,509.83x = 122,234.04 × 34,128.19
  4. Step 4: Simplify right side
    81,509.83x = 4,171,626,541.59
  5. Step 5: Solve for x
    x = 4,171,626,541.59/81,509.83
  6. Step 6: Final answer
    x = 51,179.43

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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.