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Finding the Fourth Proportional to 38,144.45, 52,642.45 and 21,154.02

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Solution

The fourth proportional to 38,144.45, 52,642.45 and 21,154.02 is: 29,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,144.45 : 52,642.45 = 21,154.02 : x
  2. Step 2: Convert to fraction form
    38,144.45/52,642.45 = 21,154.02/x
  3. Step 3: Cross multiply
    38,144.45x = 52,642.45 × 21,154.02
  4. Step 4: Simplify right side
    38,144.45x = 1,113,599,440.15
  5. Step 5: Solve for x
    x = 1,113,599,440.15/38,144.45
  6. Step 6: Final answer
    x = 29,194.27

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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.