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Finding the Fourth Proportional to 126,428.89, 189,671.05 and 47,543.09

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Solution

The fourth proportional to 126,428.89, 189,671.05 and 47,543.09 is: 71,325.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,428.89 : 189,671.05 = 47,543.09 : x
  2. Step 2: Convert to fraction form
    126,428.89/189,671.05 = 47,543.09/x
  3. Step 3: Cross multiply
    126,428.89x = 189,671.05 × 47,543.09
  4. Step 4: Simplify right side
    126,428.89x = 9,017,547,800.54
  5. Step 5: Solve for x
    x = 9,017,547,800.54/126,428.89
  6. Step 6: Final answer
    x = 71,325.06

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