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Finding the Fourth Proportional to 66,319.89, 99,480.75 and 36,795.39

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Solution

The fourth proportional to 66,319.89, 99,480.75 and 36,795.39 is: 55,193.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,319.89 : 99,480.75 = 36,795.39 : x
  2. Step 2: Convert to fraction form
    66,319.89/99,480.75 = 36,795.39/x
  3. Step 3: Cross multiply
    66,319.89x = 99,480.75 × 36,795.39
  4. Step 4: Simplify right side
    66,319.89x = 3,660,432,993.74
  5. Step 5: Solve for x
    x = 3,660,432,993.74/66,319.89
  6. Step 6: Final answer
    x = 55,193.59

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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.