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Finding the Fourth Proportional to 53,840.99, 80,751.75 and 18,790.67

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Solution

The fourth proportional to 53,840.99, 80,751.75 and 18,790.67 is: 28,182.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,840.99 : 80,751.75 = 18,790.67 : x
  2. Step 2: Convert to fraction form
    53,840.99/80,751.75 = 18,790.67/x
  3. Step 3: Cross multiply
    53,840.99x = 80,751.75 × 18,790.67
  4. Step 4: Simplify right side
    53,840.99x = 1,517,379,082.41
  5. Step 5: Solve for x
    x = 1,517,379,082.41/53,840.99
  6. Step 6: Final answer
    x = 28,182.60

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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.