Home / 49,989.24-74,988.24-20,409.12

Finding the Fourth Proportional to 49,989.24, 74,988.24 and 20,409.12

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Solution

The fourth proportional to 49,989.24, 74,988.24 and 20,409.12 is: 30,615.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,989.24 : 74,988.24 = 20,409.12 : x
  2. Step 2: Convert to fraction form
    49,989.24/74,988.24 = 20,409.12/x
  3. Step 3: Cross multiply
    49,989.24x = 74,988.24 × 20,409.12
  4. Step 4: Simplify right side
    49,989.24x = 1,530,443,988.75
  5. Step 5: Solve for x
    x = 1,530,443,988.75/49,989.24
  6. Step 6: Final answer
    x = 30,615.47

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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.