Home / 76,620.57-105,676.47-49,771.73

Finding the Fourth Proportional to 76,620.57, 105,676.47 and 49,771.73

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Solution

The fourth proportional to 76,620.57, 105,676.47 and 49,771.73 is: 68,646.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,620.57 : 105,676.47 = 49,771.73 : x
  2. Step 2: Convert to fraction form
    76,620.57/105,676.47 = 49,771.73/x
  3. Step 3: Cross multiply
    76,620.57x = 105,676.47 × 49,771.73
  4. Step 4: Simplify right side
    76,620.57x = 5,259,700,203.81
  5. Step 5: Solve for x
    x = 5,259,700,203.81/76,620.57
  6. Step 6: Final answer
    x = 68,646.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.