Home / 81,720.81-122,572.04-22,564.89

Finding the Fourth Proportional to 81,720.81, 122,572.04 and 22,564.89

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Solution

The fourth proportional to 81,720.81, 122,572.04 and 22,564.89 is: 33,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,720.81 : 122,572.04 = 22,564.89 : x
  2. Step 2: Convert to fraction form
    81,720.81/122,572.04 = 22,564.89/x
  3. Step 3: Cross multiply
    81,720.81x = 122,572.04 × 22,564.89
  4. Step 4: Simplify right side
    81,720.81x = 2,765,824,486.85
  5. Step 5: Solve for x
    x = 2,765,824,486.85/81,720.81
  6. Step 6: Final answer
    x = 33,844.80

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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.