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Finding the Fourth Proportional to 81,907.88, 122,862.42 and 26,503.88

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Solution

The fourth proportional to 81,907.88, 122,862.42 and 26,503.88 is: 39,756.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,907.88 : 122,862.42 = 26,503.88 : x
  2. Step 2: Convert to fraction form
    81,907.88/122,862.42 = 26,503.88/x
  3. Step 3: Cross multiply
    81,907.88x = 122,862.42 × 26,503.88
  4. Step 4: Simplify right side
    81,907.88x = 3,256,330,221.88
  5. Step 5: Solve for x
    x = 3,256,330,221.88/81,907.88
  6. Step 6: Final answer
    x = 39,756.01

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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.