Home / 81,981.76-122,960.40-22,811.26

Finding the Fourth Proportional to 81,981.76, 122,960.40 and 22,811.26

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Solution

The fourth proportional to 81,981.76, 122,960.40 and 22,811.26 is: 34,213.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,981.76 : 122,960.40 = 22,811.26 : x
  2. Step 2: Convert to fraction form
    81,981.76/122,960.40 = 22,811.26/x
  3. Step 3: Cross multiply
    81,981.76x = 122,960.40 × 22,811.26
  4. Step 4: Simplify right side
    81,981.76x = 2,804,881,654.10
  5. Step 5: Solve for x
    x = 2,804,881,654.10/81,981.76
  6. Step 6: Final answer
    x = 34,213.48

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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.