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Finding the Fourth Proportional to 75,412.88, 113,080.54 and 39,893.28

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Solution

The fourth proportional to 75,412.88, 113,080.54 and 39,893.28 is: 59,819.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,412.88 : 113,080.54 = 39,893.28 : x
  2. Step 2: Convert to fraction form
    75,412.88/113,080.54 = 39,893.28/x
  3. Step 3: Cross multiply
    75,412.88x = 113,080.54 × 39,893.28
  4. Step 4: Simplify right side
    75,412.88x = 4,511,153,644.77
  5. Step 5: Solve for x
    x = 4,511,153,644.77/75,412.88
  6. Step 6: Final answer
    x = 59,819.41

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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.