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Finding the Fourth Proportional to 92,992.30, 128,330.20 and 50,550.90

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Solution

The fourth proportional to 92,992.30, 128,330.20 and 50,550.90 is: 69,760.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,992.30 : 128,330.20 = 50,550.90 : x
  2. Step 2: Convert to fraction form
    92,992.30/128,330.20 = 50,550.90/x
  3. Step 3: Cross multiply
    92,992.30x = 128,330.20 × 50,550.90
  4. Step 4: Simplify right side
    92,992.30x = 6,487,207,107.18
  5. Step 5: Solve for x
    x = 6,487,207,107.18/92,992.30
  6. Step 6: Final answer
    x = 69,760.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.