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Finding the Fourth Proportional to 103,690.68, 155,560.70 and 33,570

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Solution

The fourth proportional to 103,690.68, 155,560.70 and 33,570 is: 50,362.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.68 : 155,560.70 = 33,570 : x
  2. Step 2: Convert to fraction form
    103,690.68/155,560.70 = 33,570/x
  3. Step 3: Cross multiply
    103,690.68x = 155,560.70 × 33,570
  4. Step 4: Simplify right side
    103,690.68x = 5,222,172,699
  5. Step 5: Solve for x
    x = 5,222,172,699/103,690.68
  6. Step 6: Final answer
    x = 50,362.99

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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.