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Finding the Fourth Proportional to 53,697.49, 80,523.68 and 20,399.17

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Solution

The fourth proportional to 53,697.49, 80,523.68 and 20,399.17 is: 30,590.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,697.49 : 80,523.68 = 20,399.17 : x
  2. Step 2: Convert to fraction form
    53,697.49/80,523.68 = 20,399.17/x
  3. Step 3: Cross multiply
    53,697.49x = 80,523.68 × 20,399.17
  4. Step 4: Simplify right side
    53,697.49x = 1,642,616,135.35
  5. Step 5: Solve for x
    x = 1,642,616,135.35/53,697.49
  6. Step 6: Final answer
    x = 30,590.18

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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.