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Finding the Fourth Proportional to 91,230, 125,894.96 and 50,942.64

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Solution

The fourth proportional to 91,230, 125,894.96 and 50,942.64 is: 70,299.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,230 : 125,894.96 = 50,942.64 : x
  2. Step 2: Convert to fraction form
    91,230/125,894.96 = 50,942.64/x
  3. Step 3: Cross multiply
    91,230x = 125,894.96 × 50,942.64
  4. Step 4: Simplify right side
    91,230x = 6,413,421,370.38
  5. Step 5: Solve for x
    x = 6,413,421,370.38/91,230
  6. Step 6: Final answer
    x = 70,299.48

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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.