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Finding the Fourth Proportional to 86,998.60, 120,066.49 and 48,764.64

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Solution

The fourth proportional to 86,998.60, 120,066.49 and 48,764.64 is: 67,299.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,998.60 : 120,066.49 = 48,764.64 : x
  2. Step 2: Convert to fraction form
    86,998.60/120,066.49 = 48,764.64/x
  3. Step 3: Cross multiply
    86,998.60x = 120,066.49 × 48,764.64
  4. Step 4: Simplify right side
    86,998.60x = 5,854,999,221.87
  5. Step 5: Solve for x
    x = 5,854,999,221.87/86,998.60
  6. Step 6: Final answer
    x = 67,299.93

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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.