Home / 30,611.20-45,911.76-28,618.72

Finding the Fourth Proportional to 30,611.20, 45,911.76 and 28,618.72

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Solution

The fourth proportional to 30,611.20, 45,911.76 and 28,618.72 is: 42,923.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,611.20 : 45,911.76 = 28,618.72 : x
  2. Step 2: Convert to fraction form
    30,611.20/45,911.76 = 28,618.72/x
  3. Step 3: Cross multiply
    30,611.20x = 45,911.76 × 28,618.72
  4. Step 4: Simplify right side
    30,611.20x = 1,313,935,804.15
  5. Step 5: Solve for x
    x = 1,313,935,804.15/30,611.20
  6. Step 6: Final answer
    x = 42,923.37

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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.