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Finding the Fourth Proportional to 65,808.96, 98,723.75 and 28,379.67

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Solution

The fourth proportional to 65,808.96, 98,723.75 and 28,379.67 is: 42,573.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,808.96 : 98,723.75 = 28,379.67 : x
  2. Step 2: Convert to fraction form
    65,808.96/98,723.75 = 28,379.67/x
  3. Step 3: Cross multiply
    65,808.96x = 98,723.75 × 28,379.67
  4. Step 4: Simplify right side
    65,808.96x = 2,801,747,023.49
  5. Step 5: Solve for x
    x = 2,801,747,023.49/65,808.96
  6. Step 6: Final answer
    x = 42,573.95

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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.