Home / 81,522.85-122,289.51-28,219.97

Finding the Fourth Proportional to 81,522.85, 122,289.51 and 28,219.97

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Solution

The fourth proportional to 81,522.85, 122,289.51 and 28,219.97 is: 42,331.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,522.85 : 122,289.51 = 28,219.97 : x
  2. Step 2: Convert to fraction form
    81,522.85/122,289.51 = 28,219.97/x
  3. Step 3: Cross multiply
    81,522.85x = 122,289.51 × 28,219.97
  4. Step 4: Simplify right side
    81,522.85x = 3,451,006,303.51
  5. Step 5: Solve for x
    x = 3,451,006,303.51/81,522.85
  6. Step 6: Final answer
    x = 42,331.77

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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.