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Finding the Fourth Proportional to 39,454, 54,446.52 and 21,549.05

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Solution

The fourth proportional to 39,454, 54,446.52 and 21,549.05 is: 29,737.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,454 : 54,446.52 = 21,549.05 : x
  2. Step 2: Convert to fraction form
    39,454/54,446.52 = 21,549.05/x
  3. Step 3: Cross multiply
    39,454x = 54,446.52 × 21,549.05
  4. Step 4: Simplify right side
    39,454x = 1,173,270,674.06
  5. Step 5: Solve for x
    x = 1,173,270,674.06/39,454
  6. Step 6: Final answer
    x = 29,737.69

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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.