Home / 105,729.49-145,910.91-57,984.58

Finding the Fourth Proportional to 105,729.49, 145,910.91 and 57,984.58

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Solution

The fourth proportional to 105,729.49, 145,910.91 and 57,984.58 is: 80,021.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,729.49 : 145,910.91 = 57,984.58 : x
  2. Step 2: Convert to fraction form
    105,729.49/145,910.91 = 57,984.58/x
  3. Step 3: Cross multiply
    105,729.49x = 145,910.91 × 57,984.58
  4. Step 4: Simplify right side
    105,729.49x = 8,460,582,833.77
  5. Step 5: Solve for x
    x = 8,460,582,833.77/105,729.49
  6. Step 6: Final answer
    x = 80,021.03

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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.