Home / 105,640.93-145,781.18-57,893.41

Finding the Fourth Proportional to 105,640.93, 145,781.18 and 57,893.41

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Solution

The fourth proportional to 105,640.93, 145,781.18 and 57,893.41 is: 79,891.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,640.93 : 145,781.18 = 57,893.41 : x
  2. Step 2: Convert to fraction form
    105,640.93/145,781.18 = 57,893.41/x
  3. Step 3: Cross multiply
    105,640.93x = 145,781.18 × 57,893.41
  4. Step 4: Simplify right side
    105,640.93x = 8,439,768,895.12
  5. Step 5: Solve for x
    x = 8,439,768,895.12/105,640.93
  6. Step 6: Final answer
    x = 79,891.09

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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.