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Finding the Fourth Proportional to 53,310.21, 79,791.70 and 39,264.70

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Solution

The fourth proportional to 53,310.21, 79,791.70 and 39,264.70 is: 58,769.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,310.21 : 79,791.70 = 39,264.70 : x
  2. Step 2: Convert to fraction form
    53,310.21/79,791.70 = 39,264.70/x
  3. Step 3: Cross multiply
    53,310.21x = 79,791.70 × 39,264.70
  4. Step 4: Simplify right side
    53,310.21x = 3,132,997,162.99
  5. Step 5: Solve for x
    x = 3,132,997,162.99/53,310.21
  6. Step 6: Final answer
    x = 58,769.18

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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.