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Finding the Fourth Proportional to 76,168.40, 114,252.60 and 20,004.80

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Solution

The fourth proportional to 76,168.40, 114,252.60 and 20,004.80 is: 30,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,168.40 : 114,252.60 = 20,004.80 : x
  2. Step 2: Convert to fraction form
    76,168.40/114,252.60 = 20,004.80/x
  3. Step 3: Cross multiply
    76,168.40x = 114,252.60 × 20,004.80
  4. Step 4: Simplify right side
    76,168.40x = 2,285,600,412.48
  5. Step 5: Solve for x
    x = 2,285,600,412.48/76,168.40
  6. Step 6: Final answer
    x = 30,007.20

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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.