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Finding the Fourth Proportional to 30,365.66, 45,543.30 and 8,174.09

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Solution

The fourth proportional to 30,365.66, 45,543.30 and 8,174.09 is: 12,259.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,365.66 : 45,543.30 = 8,174.09 : x
  2. Step 2: Convert to fraction form
    30,365.66/45,543.30 = 8,174.09/x
  3. Step 3: Cross multiply
    30,365.66x = 45,543.30 × 8,174.09
  4. Step 4: Simplify right side
    30,365.66x = 372,274,805.38
  5. Step 5: Solve for x
    x = 372,274,805.38/30,365.66
  6. Step 6: Final answer
    x = 12,259.73

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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.