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Finding the Fourth Proportional to 35,969.78, 49,636.48 and 19,839.90

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Solution

The fourth proportional to 35,969.78, 49,636.48 and 19,839.90 is: 27,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,969.78 : 49,636.48 = 19,839.90 : x
  2. Step 2: Convert to fraction form
    35,969.78/49,636.48 = 19,839.90/x
  3. Step 3: Cross multiply
    35,969.78x = 49,636.48 × 19,839.90
  4. Step 4: Simplify right side
    35,969.78x = 984,782,700.35
  5. Step 5: Solve for x
    x = 984,782,700.35/35,969.78
  6. Step 6: Final answer
    x = 27,378.05

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1.5x scale

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.