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Finding the Fourth Proportional to 43,489.76, 65,234.95 and 11,899.16

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Solution

The fourth proportional to 43,489.76, 65,234.95 and 11,899.16 is: 17,848.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,489.76 : 65,234.95 = 11,899.16 : x
  2. Step 2: Convert to fraction form
    43,489.76/65,234.95 = 11,899.16/x
  3. Step 3: Cross multiply
    43,489.76x = 65,234.95 × 11,899.16
  4. Step 4: Simplify right side
    43,489.76x = 776,240,751.72
  5. Step 5: Solve for x
    x = 776,240,751.72/43,489.76
  6. Step 6: Final answer
    x = 17,848.82

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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.