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Finding the Fourth Proportional to 61,300.72, 91,931.64 and 19,738

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Solution

The fourth proportional to 61,300.72, 91,931.64 and 19,738 is: 29,600.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,300.72 : 91,931.64 = 19,738 : x
  2. Step 2: Convert to fraction form
    61,300.72/91,931.64 = 19,738/x
  3. Step 3: Cross multiply
    61,300.72x = 91,931.64 × 19,738
  4. Step 4: Simplify right side
    61,300.72x = 1,814,546,710.32
  5. Step 5: Solve for x
    x = 1,814,546,710.32/61,300.72
  6. Step 6: Final answer
    x = 29,600.74

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