Home / 53,708.33-80,562.53-20,420.71

Finding the Fourth Proportional to 53,708.33, 80,562.53 and 20,420.71

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Solution

The fourth proportional to 53,708.33, 80,562.53 and 20,420.71 is: 30,631.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,708.33 : 80,562.53 = 20,420.71 : x
  2. Step 2: Convert to fraction form
    53,708.33/80,562.53 = 20,420.71/x
  3. Step 3: Cross multiply
    53,708.33x = 80,562.53 × 20,420.71
  4. Step 4: Simplify right side
    53,708.33x = 1,645,143,911.64
  5. Step 5: Solve for x
    x = 1,645,143,911.64/53,708.33
  6. Step 6: Final answer
    x = 30,631.07

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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.