Home / 105,383.52-145,429.44-57,636.96

Finding the Fourth Proportional to 105,383.52, 145,429.44 and 57,636.96

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Solution

The fourth proportional to 105,383.52, 145,429.44 and 57,636.96 is: 79,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,383.52 : 145,429.44 = 57,636.96 : x
  2. Step 2: Convert to fraction form
    105,383.52/145,429.44 = 57,636.96/x
  3. Step 3: Cross multiply
    105,383.52x = 145,429.44 × 57,636.96
  4. Step 4: Simplify right side
    105,383.52x = 8,382,110,816.10
  5. Step 5: Solve for x
    x = 8,382,110,816.10/105,383.52
  6. Step 6: Final answer
    x = 79,539.10

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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.