Home / 75,732.98-113,640.96-28,380.74

Finding the Fourth Proportional to 75,732.98, 113,640.96 and 28,380.74

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Solution

The fourth proportional to 75,732.98, 113,640.96 and 28,380.74 is: 42,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,732.98 : 113,640.96 = 28,380.74 : x
  2. Step 2: Convert to fraction form
    75,732.98/113,640.96 = 28,380.74/x
  3. Step 3: Cross multiply
    75,732.98x = 113,640.96 × 28,380.74
  4. Step 4: Simplify right side
    75,732.98x = 3,225,214,539.11
  5. Step 5: Solve for x
    x = 3,225,214,539.11/75,732.98
  6. Step 6: Final answer
    x = 42,586.66

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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.