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Finding the Fourth Proportional to 128,574.86, 192,846.93 and 33,812.42

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Solution

The fourth proportional to 128,574.86, 192,846.93 and 33,812.42 is: 50,714.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574.86 : 192,846.93 = 33,812.42 : x
  2. Step 2: Convert to fraction form
    128,574.86/192,846.93 = 33,812.42/x
  3. Step 3: Cross multiply
    128,574.86x = 192,846.93 × 33,812.42
  4. Step 4: Simplify right side
    128,574.86x = 6,520,621,874.99
  5. Step 5: Solve for x
    x = 6,520,621,874.99/128,574.86
  6. Step 6: Final answer
    x = 50,714.60

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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.