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Finding the Fourth Proportional to 38,978.58, 53,755.14 and 25,545

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Solution

The fourth proportional to 38,978.58, 53,755.14 and 25,545 is: 35,228.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,978.58 : 53,755.14 = 25,545 : x
  2. Step 2: Convert to fraction form
    38,978.58/53,755.14 = 25,545/x
  3. Step 3: Cross multiply
    38,978.58x = 53,755.14 × 25,545
  4. Step 4: Simplify right side
    38,978.58x = 1,373,175,051.30
  5. Step 5: Solve for x
    x = 1,373,175,051.30/38,978.58
  6. Step 6: Final answer
    x = 35,228.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.