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Finding the Fourth Proportional to 86,995.80, 120,052.86 and 48,755.30

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Solution

The fourth proportional to 86,995.80, 120,052.86 and 48,755.30 is: 67,281.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,995.80 : 120,052.86 = 48,755.30 : x
  2. Step 2: Convert to fraction form
    86,995.80/120,052.86 = 48,755.30/x
  3. Step 3: Cross multiply
    86,995.80x = 120,052.86 × 48,755.30
  4. Step 4: Simplify right side
    86,995.80x = 5,853,213,205.16
  5. Step 5: Solve for x
    x = 5,853,213,205.16/86,995.80
  6. Step 6: Final answer
    x = 67,281.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.