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Finding the Fourth Proportional to 39,674.03, 54,749.93 and 21,768.66

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Solution

The fourth proportional to 39,674.03, 54,749.93 and 21,768.66 is: 30,040.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,674.03 : 54,749.93 = 21,768.66 : x
  2. Step 2: Convert to fraction form
    39,674.03/54,749.93 = 21,768.66/x
  3. Step 3: Cross multiply
    39,674.03x = 54,749.93 × 21,768.66
  4. Step 4: Simplify right side
    39,674.03x = 1,191,832,502.35
  5. Step 5: Solve for x
    x = 1,191,832,502.35/39,674.03
  6. Step 6: Final answer
    x = 30,040.62

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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.