Home / 30,106.11-45,149.59-28,140.54

Finding the Fourth Proportional to 30,106.11, 45,149.59 and 28,140.54

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Solution

The fourth proportional to 30,106.11, 45,149.59 and 28,140.54 is: 42,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,106.11 : 45,149.59 = 28,140.54 : x
  2. Step 2: Convert to fraction form
    30,106.11/45,149.59 = 28,140.54/x
  3. Step 3: Cross multiply
    30,106.11x = 45,149.59 × 28,140.54
  4. Step 4: Simplify right side
    30,106.11x = 1,270,533,796.65
  5. Step 5: Solve for x
    x = 1,270,533,796.65/30,106.11
  6. Step 6: Final answer
    x = 42,201.87

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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.