Home / 105,558.75-145,672.66-57,816.55

Finding the Fourth Proportional to 105,558.75, 145,672.66 and 57,816.55

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Solution

The fourth proportional to 105,558.75, 145,672.66 and 57,816.55 is: 79,787.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,558.75 : 145,672.66 = 57,816.55 : x
  2. Step 2: Convert to fraction form
    105,558.75/145,672.66 = 57,816.55/x
  3. Step 3: Cross multiply
    105,558.75x = 145,672.66 × 57,816.55
  4. Step 4: Simplify right side
    105,558.75x = 8,422,290,630.52
  5. Step 5: Solve for x
    x = 8,422,290,630.52/105,558.75
  6. Step 6: Final answer
    x = 79,787.71

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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.