Home / 81,412.74-122,136.64-25,251.72

Finding the Fourth Proportional to 81,412.74, 122,136.64 and 25,251.72

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Solution

The fourth proportional to 81,412.74, 122,136.64 and 25,251.72 is: 37,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,412.74 : 122,136.64 = 25,251.72 : x
  2. Step 2: Convert to fraction form
    81,412.74/122,136.64 = 25,251.72/x
  3. Step 3: Cross multiply
    81,412.74x = 122,136.64 × 25,251.72
  4. Step 4: Simplify right side
    81,412.74x = 3,084,160,235.02
  5. Step 5: Solve for x
    x = 3,084,160,235.02/81,412.74
  6. Step 6: Final answer
    x = 37,883.02

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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.