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Finding the Fourth Proportional to 76,037.20, 114,055.80 and 20,633.20

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Solution

The fourth proportional to 76,037.20, 114,055.80 and 20,633.20 is: 30,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,037.20 : 114,055.80 = 20,633.20 : x
  2. Step 2: Convert to fraction form
    76,037.20/114,055.80 = 20,633.20/x
  3. Step 3: Cross multiply
    76,037.20x = 114,055.80 × 20,633.20
  4. Step 4: Simplify right side
    76,037.20x = 2,353,336,132.56
  5. Step 5: Solve for x
    x = 2,353,336,132.56/76,037.20
  6. Step 6: Final answer
    x = 30,949.80

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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.