Home / 30,104.76-45,087.65-21,618.53

Finding the Fourth Proportional to 30,104.76, 45,087.65 and 21,618.53

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Solution

The fourth proportional to 30,104.76, 45,087.65 and 21,618.53 is: 32,377.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,104.76 : 45,087.65 = 21,618.53 : x
  2. Step 2: Convert to fraction form
    30,104.76/45,087.65 = 21,618.53/x
  3. Step 3: Cross multiply
    30,104.76x = 45,087.65 × 21,618.53
  4. Step 4: Simplify right side
    30,104.76x = 974,728,380.62
  5. Step 5: Solve for x
    x = 974,728,380.62/30,104.76
  6. Step 6: Final answer
    x = 32,377.88

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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.