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Finding the Fourth Proportional to 36,430.38, 50,273.43 and 20,515.02

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Solution

The fourth proportional to 36,430.38, 50,273.43 and 20,515.02 is: 28,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,430.38 : 50,273.43 = 20,515.02 : x
  2. Step 2: Convert to fraction form
    36,430.38/50,273.43 = 20,515.02/x
  3. Step 3: Cross multiply
    36,430.38x = 50,273.43 × 20,515.02
  4. Step 4: Simplify right side
    36,430.38x = 1,031,360,421.92
  5. Step 5: Solve for x
    x = 1,031,360,421.92/36,430.38
  6. Step 6: Final answer
    x = 28,310.45

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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.