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Finding the Fourth Proportional to 78,039.72, 117,085.86 and 24,740.40

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Solution

The fourth proportional to 78,039.72, 117,085.86 and 24,740.40 is: 37,118.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,039.72 : 117,085.86 = 24,740.40 : x
  2. Step 2: Convert to fraction form
    78,039.72/117,085.86 = 24,740.40/x
  3. Step 3: Cross multiply
    78,039.72x = 117,085.86 × 24,740.40
  4. Step 4: Simplify right side
    78,039.72x = 2,896,751,010.74
  5. Step 5: Solve for x
    x = 2,896,751,010.74/78,039.72
  6. Step 6: Final answer
    x = 37,118.93

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