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Finding the Fourth Proportional to 75,395.60, 113,149.56 and 28,739.60

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Solution

The fourth proportional to 75,395.60, 113,149.56 and 28,739.60 is: 43,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,395.60 : 113,149.56 = 28,739.60 : x
  2. Step 2: Convert to fraction form
    75,395.60/113,149.56 = 28,739.60/x
  3. Step 3: Cross multiply
    75,395.60x = 113,149.56 × 28,739.60
  4. Step 4: Simplify right side
    75,395.60x = 3,251,873,094.58
  5. Step 5: Solve for x
    x = 3,251,873,094.58/75,395.60
  6. Step 6: Final answer
    x = 43,130.81

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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.