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Finding the Fourth Proportional to 70,272.18, 105,407.73 and 28,690.02

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Solution

The fourth proportional to 70,272.18, 105,407.73 and 28,690.02 is: 43,034.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,272.18 : 105,407.73 = 28,690.02 : x
  2. Step 2: Convert to fraction form
    70,272.18/105,407.73 = 28,690.02/x
  3. Step 3: Cross multiply
    70,272.18x = 105,407.73 × 28,690.02
  4. Step 4: Simplify right side
    70,272.18x = 3,024,149,881.85
  5. Step 5: Solve for x
    x = 3,024,149,881.85/70,272.18
  6. Step 6: Final answer
    x = 43,034.81

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