Home / 105,486.44-145,571.18-57,739.36

Finding the Fourth Proportional to 105,486.44, 145,571.18 and 57,739.36

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Solution

The fourth proportional to 105,486.44, 145,571.18 and 57,739.36 is: 79,680.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,486.44 : 145,571.18 = 57,739.36 : x
  2. Step 2: Convert to fraction form
    105,486.44/145,571.18 = 57,739.36/x
  3. Step 3: Cross multiply
    105,486.44x = 145,571.18 × 57,739.36
  4. Step 4: Simplify right side
    105,486.44x = 8,405,186,767.64
  5. Step 5: Solve for x
    x = 8,405,186,767.64/105,486.44
  6. Step 6: Final answer
    x = 79,680.26

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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.