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Finding the Fourth Proportional to 60,860.84, 91,282.73 and 20,879.16

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Solution

The fourth proportional to 60,860.84, 91,282.73 and 20,879.16 is: 31,315.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,860.84 : 91,282.73 = 20,879.16 : x
  2. Step 2: Convert to fraction form
    60,860.84/91,282.73 = 20,879.16/x
  3. Step 3: Cross multiply
    60,860.84x = 91,282.73 × 20,879.16
  4. Step 4: Simplify right side
    60,860.84x = 1,905,906,268.49
  5. Step 5: Solve for x
    x = 1,905,906,268.49/60,860.84
  6. Step 6: Final answer
    x = 31,315.81

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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.