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Finding the Fourth Proportional to 51,207.40, 76,811.10 and 45,958.60

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Solution

The fourth proportional to 51,207.40, 76,811.10 and 45,958.60 is: 68,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,207.40 : 76,811.10 = 45,958.60 : x
  2. Step 2: Convert to fraction form
    51,207.40/76,811.10 = 45,958.60/x
  3. Step 3: Cross multiply
    51,207.40x = 76,811.10 × 45,958.60
  4. Step 4: Simplify right side
    51,207.40x = 3,530,130,620.46
  5. Step 5: Solve for x
    x = 3,530,130,620.46/51,207.40
  6. Step 6: Final answer
    x = 68,937.90

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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.