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Finding the Fourth Proportional to 91,749.28, 137,590.90 and 31,761.46

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Solution

The fourth proportional to 91,749.28, 137,590.90 and 31,761.46 is: 47,630.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,749.28 : 137,590.90 = 31,761.46 : x
  2. Step 2: Convert to fraction form
    91,749.28/137,590.90 = 31,761.46/x
  3. Step 3: Cross multiply
    91,749.28x = 137,590.90 × 31,761.46
  4. Step 4: Simplify right side
    91,749.28x = 4,370,087,866.71
  5. Step 5: Solve for x
    x = 4,370,087,866.71/91,749.28
  6. Step 6: Final answer
    x = 47,630.76

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