Home / 75,415.93-113,138.46-28,665.16

Finding the Fourth Proportional to 75,415.93, 113,138.46 and 28,665.16

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Solution

The fourth proportional to 75,415.93, 113,138.46 and 28,665.16 is: 43,003.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,415.93 : 113,138.46 = 28,665.16 : x
  2. Step 2: Convert to fraction form
    75,415.93/113,138.46 = 28,665.16/x
  3. Step 3: Cross multiply
    75,415.93x = 113,138.46 × 28,665.16
  4. Step 4: Simplify right side
    75,415.93x = 3,243,132,058.05
  5. Step 5: Solve for x
    x = 3,243,132,058.05/75,415.93
  6. Step 6: Final answer
    x = 43,003.28

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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.