Home / 40,268.78-60,375.61-20,509.10

Finding the Fourth Proportional to 40,268.78, 60,375.61 and 20,509.10

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Solution

The fourth proportional to 40,268.78, 60,375.61 and 20,509.10 is: 30,749.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,268.78 : 60,375.61 = 20,509.10 : x
  2. Step 2: Convert to fraction form
    40,268.78/60,375.61 = 20,509.10/x
  3. Step 3: Cross multiply
    40,268.78x = 60,375.61 × 20,509.10
  4. Step 4: Simplify right side
    40,268.78x = 1,238,249,423.05
  5. Step 5: Solve for x
    x = 1,238,249,423.05/40,268.78
  6. Step 6: Final answer
    x = 30,749.61

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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.