Home / 105,440.06-145,509.39-57,694.43

Finding the Fourth Proportional to 105,440.06, 145,509.39 and 57,694.43

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Solution

The fourth proportional to 105,440.06, 145,509.39 and 57,694.43 is: 79,619.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,440.06 : 145,509.39 = 57,694.43 : x
  2. Step 2: Convert to fraction form
    105,440.06/145,509.39 = 57,694.43/x
  3. Step 3: Cross multiply
    105,440.06x = 145,509.39 × 57,694.43
  4. Step 4: Simplify right side
    105,440.06x = 8,395,080,588.15
  5. Step 5: Solve for x
    x = 8,395,080,588.15/105,440.06
  6. Step 6: Final answer
    x = 79,619.46

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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.