Home / 105,726.35-145,903.83-57,976.55

Finding the Fourth Proportional to 105,726.35, 145,903.83 and 57,976.55

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Solution

The fourth proportional to 105,726.35, 145,903.83 and 57,976.55 is: 80,008.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,726.35 : 145,903.83 = 57,976.55 : x
  2. Step 2: Convert to fraction form
    105,726.35/145,903.83 = 57,976.55/x
  3. Step 3: Cross multiply
    105,726.35x = 145,903.83 × 57,976.55
  4. Step 4: Simplify right side
    105,726.35x = 8,458,999,965.67
  5. Step 5: Solve for x
    x = 8,458,999,965.67/105,726.35
  6. Step 6: Final answer
    x = 80,008.44

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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.