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Finding the Fourth Proportional to 30,234.55, 45,351.93 and 9,174.78

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Solution

The fourth proportional to 30,234.55, 45,351.93 and 9,174.78 is: 13,762.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,234.55 : 45,351.93 = 9,174.78 : x
  2. Step 2: Convert to fraction form
    30,234.55/45,351.93 = 9,174.78/x
  3. Step 3: Cross multiply
    30,234.55x = 45,351.93 × 9,174.78
  4. Step 4: Simplify right side
    30,234.55x = 416,093,980.33
  5. Step 5: Solve for x
    x = 416,093,980.33/30,234.55
  6. Step 6: Final answer
    x = 13,762.20

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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.