Home / 81,388.60-122,071.20-31,492.24

Finding the Fourth Proportional to 81,388.60, 122,071.20 and 31,492.24

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Solution

The fourth proportional to 81,388.60, 122,071.20 and 31,492.24 is: 47,233.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,388.60 : 122,071.20 = 31,492.24 : x
  2. Step 2: Convert to fraction form
    81,388.60/122,071.20 = 31,492.24/x
  3. Step 3: Cross multiply
    81,388.60x = 122,071.20 × 31,492.24
  4. Step 4: Simplify right side
    81,388.60x = 3,844,295,527.49
  5. Step 5: Solve for x
    x = 3,844,295,527.49/81,388.60
  6. Step 6: Final answer
    x = 47,233.83

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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.