Home / 86,249.18-118,980.32-50,415.78

Finding the Fourth Proportional to 86,249.18, 118,980.32 and 50,415.78

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Solution

The fourth proportional to 86,249.18, 118,980.32 and 50,415.78 is: 69,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,249.18 : 118,980.32 = 50,415.78 : x
  2. Step 2: Convert to fraction form
    86,249.18/118,980.32 = 50,415.78/x
  3. Step 3: Cross multiply
    86,249.18x = 118,980.32 × 50,415.78
  4. Step 4: Simplify right side
    86,249.18x = 5,998,485,637.45
  5. Step 5: Solve for x
    x = 5,998,485,637.45/86,249.18
  6. Step 6: Final answer
    x = 69,548.32

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1.5x scale

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.