Home / 105,625.09-145,763.21-57,227.81

Finding the Fourth Proportional to 105,625.09, 145,763.21 and 57,227.81

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Solution

The fourth proportional to 105,625.09, 145,763.21 and 57,227.81 is: 78,974.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,625.09 : 145,763.21 = 57,227.81 : x
  2. Step 2: Convert to fraction form
    105,625.09/145,763.21 = 57,227.81/x
  3. Step 3: Cross multiply
    105,625.09x = 145,763.21 × 57,227.81
  4. Step 4: Simplify right side
    105,625.09x = 8,341,709,177.12
  5. Step 5: Solve for x
    x = 8,341,709,177.12/105,625.09
  6. Step 6: Final answer
    x = 78,974.69

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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.