Home / 75,411.43-113,131.72-28,660.66

Finding the Fourth Proportional to 75,411.43, 113,131.72 and 28,660.66

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Solution

The fourth proportional to 75,411.43, 113,131.72 and 28,660.66 is: 42,996.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,411.43 : 113,131.72 = 28,660.66 : x
  2. Step 2: Convert to fraction form
    75,411.43/113,131.72 = 28,660.66/x
  3. Step 3: Cross multiply
    75,411.43x = 113,131.72 × 28,660.66
  4. Step 4: Simplify right side
    75,411.43x = 3,242,429,762.14
  5. Step 5: Solve for x
    x = 3,242,429,762.14/75,411.43
  6. Step 6: Final answer
    x = 42,996.53

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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.