Home / 83,785.08-125,676.54-20,605.74

Finding the Fourth Proportional to 83,785.08, 125,676.54 and 20,605.74

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Solution

The fourth proportional to 83,785.08, 125,676.54 and 20,605.74 is: 30,908.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,785.08 : 125,676.54 = 20,605.74 : x
  2. Step 2: Convert to fraction form
    83,785.08/125,676.54 = 20,605.74/x
  3. Step 3: Cross multiply
    83,785.08x = 125,676.54 × 20,605.74
  4. Step 4: Simplify right side
    83,785.08x = 2,589,658,107.34
  5. Step 5: Solve for x
    x = 2,589,658,107.34/83,785.08
  6. Step 6: Final answer
    x = 30,908.34

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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.