Home / 53,938.67-80,908.76-20,660.43

Finding the Fourth Proportional to 53,938.67, 80,908.76 and 20,660.43

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Solution

The fourth proportional to 53,938.67, 80,908.76 and 20,660.43 is: 30,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,938.67 : 80,908.76 = 20,660.43 : x
  2. Step 2: Convert to fraction form
    53,938.67/80,908.76 = 20,660.43/x
  3. Step 3: Cross multiply
    53,938.67x = 80,908.76 × 20,660.43
  4. Step 4: Simplify right side
    53,938.67x = 1,671,609,824.02
  5. Step 5: Solve for x
    x = 1,671,609,824.02/53,938.67
  6. Step 6: Final answer
    x = 30,990.93

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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.