Home / 83,783.09-125,673.52-20,603.76

Finding the Fourth Proportional to 83,783.09, 125,673.52 and 20,603.76

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Solution

The fourth proportional to 83,783.09, 125,673.52 and 20,603.76 is: 30,905.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,783.09 : 125,673.52 = 20,603.76 : x
  2. Step 2: Convert to fraction form
    83,783.09/125,673.52 = 20,603.76/x
  3. Step 3: Cross multiply
    83,783.09x = 125,673.52 × 20,603.76
  4. Step 4: Simplify right side
    83,783.09x = 2,589,347,044.44
  5. Step 5: Solve for x
    x = 2,589,347,044.44/83,783.09
  6. Step 6: Final answer
    x = 30,905.37

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1.5x scale

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.