Home / 105,481.30-145,558.56-57,725.41

Finding the Fourth Proportional to 105,481.30, 145,558.56 and 57,725.41

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Solution

The fourth proportional to 105,481.30, 145,558.56 and 57,725.41 is: 79,657.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,481.30 : 145,558.56 = 57,725.41 : x
  2. Step 2: Convert to fraction form
    105,481.30/145,558.56 = 57,725.41/x
  3. Step 3: Cross multiply
    105,481.30x = 145,558.56 × 57,725.41
  4. Step 4: Simplify right side
    105,481.30x = 8,402,427,555.01
  5. Step 5: Solve for x
    x = 8,402,427,555.01/105,481.30
  6. Step 6: Final answer
    x = 79,657.98

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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.