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Finding the Fourth Proportional to 72,726.63, 100,362.09 and 40,895.75

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Solution

The fourth proportional to 72,726.63, 100,362.09 and 40,895.75 is: 56,435.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,726.63 : 100,362.09 = 40,895.75 : x
  2. Step 2: Convert to fraction form
    72,726.63/100,362.09 = 40,895.75/x
  3. Step 3: Cross multiply
    72,726.63x = 100,362.09 × 40,895.75
  4. Step 4: Simplify right side
    72,726.63x = 4,104,383,116.34
  5. Step 5: Solve for x
    x = 4,104,383,116.34/72,726.63
  6. Step 6: Final answer
    x = 56,435.77

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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.