Home / 53,409.73-80,133.10-20,139.33

Finding the Fourth Proportional to 53,409.73, 80,133.10 and 20,139.33

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Solution

The fourth proportional to 53,409.73, 80,133.10 and 20,139.33 is: 30,215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,409.73 : 80,133.10 = 20,139.33 : x
  2. Step 2: Convert to fraction form
    53,409.73/80,133.10 = 20,139.33/x
  3. Step 3: Cross multiply
    53,409.73x = 80,133.10 × 20,139.33
  4. Step 4: Simplify right side
    53,409.73x = 1,613,827,194.97
  5. Step 5: Solve for x
    x = 1,613,827,194.97/53,409.73
  6. Step 6: Final answer
    x = 30,215.98

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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.