Home / 55,771.20-76,960.80-51,312.96

Finding the Fourth Proportional to 55,771.20, 76,960.80 and 51,312.96

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Solution

The fourth proportional to 55,771.20, 76,960.80 and 51,312.96 is: 70,808.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,771.20 : 76,960.80 = 51,312.96 : x
  2. Step 2: Convert to fraction form
    55,771.20/76,960.80 = 51,312.96/x
  3. Step 3: Cross multiply
    55,771.20x = 76,960.80 × 51,312.96
  4. Step 4: Simplify right side
    55,771.20x = 3,949,086,451.97
  5. Step 5: Solve for x
    x = 3,949,086,451.97/55,771.20
  6. Step 6: Final answer
    x = 70,808.71

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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.