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Finding the Fourth Proportional to 103,704.50, 155,579.79 and 38,040.50

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Solution

The fourth proportional to 103,704.50, 155,579.79 and 38,040.50 is: 57,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,704.50 : 155,579.79 = 38,040.50 : x
  2. Step 2: Convert to fraction form
    103,704.50/155,579.79 = 38,040.50/x
  3. Step 3: Cross multiply
    103,704.50x = 155,579.79 × 38,040.50
  4. Step 4: Simplify right side
    103,704.50x = 5,918,333,001.50
  5. Step 5: Solve for x
    x = 5,918,333,001.50/103,704.50
  6. Step 6: Final answer
    x = 57,069.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.