Home / 81,784.84-122,677.10-25,629.24

Finding the Fourth Proportional to 81,784.84, 122,677.10 and 25,629.24

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Solution

The fourth proportional to 81,784.84, 122,677.10 and 25,629.24 is: 38,443.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,784.84 : 122,677.10 = 25,629.24 : x
  2. Step 2: Convert to fraction form
    81,784.84/122,677.10 = 25,629.24/x
  3. Step 3: Cross multiply
    81,784.84x = 122,677.10 × 25,629.24
  4. Step 4: Simplify right side
    81,784.84x = 3,144,120,838.40
  5. Step 5: Solve for x
    x = 3,144,120,838.40/81,784.84
  6. Step 6: Final answer
    x = 38,443.81

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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.