Home / 105,486.56-145,571.61-57,742.93

Finding the Fourth Proportional to 105,486.56, 145,571.61 and 57,742.93

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Solution

The fourth proportional to 105,486.56, 145,571.61 and 57,742.93 is: 79,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,486.56 : 145,571.61 = 57,742.93 : x
  2. Step 2: Convert to fraction form
    105,486.56/145,571.61 = 57,742.93/x
  3. Step 3: Cross multiply
    105,486.56x = 145,571.61 × 57,742.93
  4. Step 4: Simplify right side
    105,486.56x = 8,405,731,286.22
  5. Step 5: Solve for x
    x = 8,405,731,286.22/105,486.56
  6. Step 6: Final answer
    x = 79,685.33

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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.