Home / 81,835.56-122,641.35-61,828.61

Finding the Fourth Proportional to 81,835.56, 122,641.35 and 61,828.61

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Solution

The fourth proportional to 81,835.56, 122,641.35 and 61,828.61 is: 92,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,835.56 : 122,641.35 = 61,828.61 : x
  2. Step 2: Convert to fraction form
    81,835.56/122,641.35 = 61,828.61/x
  3. Step 3: Cross multiply
    81,835.56x = 122,641.35 × 61,828.61
  4. Step 4: Simplify right side
    81,835.56x = 7,582,743,585.82
  5. Step 5: Solve for x
    x = 7,582,743,585.82/81,835.56
  6. Step 6: Final answer
    x = 92,658.30

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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.