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Finding the Fourth Proportional to 39,621, 54,678.58 and 22,628

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Solution

The fourth proportional to 39,621, 54,678.58 and 22,628 is: 31,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,621 : 54,678.58 = 22,628 : x
  2. Step 2: Convert to fraction form
    39,621/54,678.58 = 22,628/x
  3. Step 3: Cross multiply
    39,621x = 54,678.58 × 22,628
  4. Step 4: Simplify right side
    39,621x = 1,237,266,908.24
  5. Step 5: Solve for x
    x = 1,237,266,908.24/39,621
  6. Step 6: Final answer
    x = 31,227.55

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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.