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Finding the Fourth Proportional to 39,674.64, 54,750.06 and 21,769.48

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Solution

The fourth proportional to 39,674.64, 54,750.06 and 21,769.48 is: 30,041.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,674.64 : 54,750.06 = 21,769.48 : x
  2. Step 2: Convert to fraction form
    39,674.64/54,750.06 = 21,769.48/x
  3. Step 3: Cross multiply
    39,674.64x = 54,750.06 × 21,769.48
  4. Step 4: Simplify right side
    39,674.64x = 1,191,880,336.17
  5. Step 5: Solve for x
    x = 1,191,880,336.17/39,674.64
  6. Step 6: Final answer
    x = 30,041.36

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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.