Home / 81,442.96-122,158.60-25,281.72

Finding the Fourth Proportional to 81,442.96, 122,158.60 and 25,281.72

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Solution

The fourth proportional to 81,442.96, 122,158.60 and 25,281.72 is: 37,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,442.96 : 122,158.60 = 25,281.72 : x
  2. Step 2: Convert to fraction form
    81,442.96/122,158.60 = 25,281.72/x
  3. Step 3: Cross multiply
    81,442.96x = 122,158.60 × 25,281.72
  4. Step 4: Simplify right side
    81,442.96x = 3,088,379,520.79
  5. Step 5: Solve for x
    x = 3,088,379,520.79/81,442.96
  6. Step 6: Final answer
    x = 37,920.77

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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.