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Finding the Fourth Proportional to 86,994, 120,063.87 and 49,268.25

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Solution

The fourth proportional to 86,994, 120,063.87 and 49,268.25 is: 67,997.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,994 : 120,063.87 = 49,268.25 : x
  2. Step 2: Convert to fraction form
    86,994/120,063.87 = 49,268.25/x
  3. Step 3: Cross multiply
    86,994x = 120,063.87 × 49,268.25
  4. Step 4: Simplify right side
    86,994x = 5,915,336,763.13
  5. Step 5: Solve for x
    x = 5,915,336,763.13/86,994
  6. Step 6: Final answer
    x = 67,997.07

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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.