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Finding the Fourth Proportional to 51,008.40, 76,512.60 and 15,958.80

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Solution

The fourth proportional to 51,008.40, 76,512.60 and 15,958.80 is: 23,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,008.40 : 76,512.60 = 15,958.80 : x
  2. Step 2: Convert to fraction form
    51,008.40/76,512.60 = 15,958.80/x
  3. Step 3: Cross multiply
    51,008.40x = 76,512.60 × 15,958.80
  4. Step 4: Simplify right side
    51,008.40x = 1,221,049,280.88
  5. Step 5: Solve for x
    x = 1,221,049,280.88/51,008.40
  6. Step 6: Final answer
    x = 23,938.20

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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.