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Finding the Fourth Proportional to 103,570.41, 155,021.49 and 53,581.67

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Solution

The fourth proportional to 103,570.41, 155,021.49 and 53,581.67 is: 80,199.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,570.41 : 155,021.49 = 53,581.67 : x
  2. Step 2: Convert to fraction form
    103,570.41/155,021.49 = 53,581.67/x
  3. Step 3: Cross multiply
    103,570.41x = 155,021.49 × 53,581.67
  4. Step 4: Simplify right side
    103,570.41x = 8,306,309,544.98
  5. Step 5: Solve for x
    x = 8,306,309,544.98/103,570.41
  6. Step 6: Final answer
    x = 80,199.64

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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.