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Finding the Fourth Proportional to 39,141.53, 54,390.02 and 38,735.12

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Solution

The fourth proportional to 39,141.53, 54,390.02 and 38,735.12 is: 53,825.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,141.53 : 54,390.02 = 38,735.12 : x
  2. Step 2: Convert to fraction form
    39,141.53/54,390.02 = 38,735.12/x
  3. Step 3: Cross multiply
    39,141.53x = 54,390.02 × 38,735.12
  4. Step 4: Simplify right side
    39,141.53x = 2,106,803,951.50
  5. Step 5: Solve for x
    x = 2,106,803,951.50/39,141.53
  6. Step 6: Final answer
    x = 53,825.28

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.