Home / 51,251.20-76,887.60-21,653.80

Finding the Fourth Proportional to 51,251.20, 76,887.60 and 21,653.80

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Solution

The fourth proportional to 51,251.20, 76,887.60 and 21,653.80 is: 32,485.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,251.20 : 76,887.60 = 21,653.80 : x
  2. Step 2: Convert to fraction form
    51,251.20/76,887.60 = 21,653.80/x
  3. Step 3: Cross multiply
    51,251.20x = 76,887.60 × 21,653.80
  4. Step 4: Simplify right side
    51,251.20x = 1,664,908,712.88
  5. Step 5: Solve for x
    x = 1,664,908,712.88/51,251.20
  6. Step 6: Final answer
    x = 32,485.26

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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.