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Finding the Fourth Proportional to 83,430.56, 125,144.76 and 20,251.16

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Solution

The fourth proportional to 83,430.56, 125,144.76 and 20,251.16 is: 30,376.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,430.56 : 125,144.76 = 20,251.16 : x
  2. Step 2: Convert to fraction form
    83,430.56/125,144.76 = 20,251.16/x
  3. Step 3: Cross multiply
    83,430.56x = 125,144.76 × 20,251.16
  4. Step 4: Simplify right side
    83,430.56x = 2,534,326,557.92
  5. Step 5: Solve for x
    x = 2,534,326,557.92/83,430.56
  6. Step 6: Final answer
    x = 30,376.48

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