Home / 105,486.66-145,571.81-57,743.06

Finding the Fourth Proportional to 105,486.66, 145,571.81 and 57,743.06

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Solution

The fourth proportional to 105,486.66, 145,571.81 and 57,743.06 is: 79,685.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,486.66 : 145,571.81 = 57,743.06 : x
  2. Step 2: Convert to fraction form
    105,486.66/145,571.81 = 57,743.06/x
  3. Step 3: Cross multiply
    105,486.66x = 145,571.81 × 57,743.06
  4. Step 4: Simplify right side
    105,486.66x = 8,405,760,742.56
  5. Step 5: Solve for x
    x = 8,405,760,742.56/105,486.66
  6. Step 6: Final answer
    x = 79,685.53

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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.