Home / 75,420.18-113,144.86-28,669.41

Finding the Fourth Proportional to 75,420.18, 113,144.86 and 28,669.41

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Solution

The fourth proportional to 75,420.18, 113,144.86 and 28,669.41 is: 43,009.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,420.18 : 113,144.86 = 28,669.41 : x
  2. Step 2: Convert to fraction form
    75,420.18/113,144.86 = 28,669.41/x
  3. Step 3: Cross multiply
    75,420.18x = 113,144.86 × 28,669.41
  4. Step 4: Simplify right side
    75,420.18x = 3,243,796,380.73
  5. Step 5: Solve for x
    x = 3,243,796,380.73/75,420.18
  6. Step 6: Final answer
    x = 43,009.66

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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.