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Finding the Fourth Proportional to 53,407.95, 80,112.19 and 13,965.15

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Solution

The fourth proportional to 53,407.95, 80,112.19 and 13,965.15 is: 20,947.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,407.95 : 80,112.19 = 13,965.15 : x
  2. Step 2: Convert to fraction form
    53,407.95/80,112.19 = 13,965.15/x
  3. Step 3: Cross multiply
    53,407.95x = 80,112.19 × 13,965.15
  4. Step 4: Simplify right side
    53,407.95x = 1,118,778,314.70
  5. Step 5: Solve for x
    x = 1,118,778,314.70/53,407.95
  6. Step 6: Final answer
    x = 20,947.79

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