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Finding the Fourth Proportional to 61,307.49, 91,968.44 and 21,870.21

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Solution

The fourth proportional to 61,307.49, 91,968.44 and 21,870.21 is: 32,807.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,307.49 : 91,968.44 = 21,870.21 : x
  2. Step 2: Convert to fraction form
    61,307.49/91,968.44 = 21,870.21/x
  3. Step 3: Cross multiply
    61,307.49x = 91,968.44 × 21,870.21
  4. Step 4: Simplify right side
    61,307.49x = 2,011,368,986.82
  5. Step 5: Solve for x
    x = 2,011,368,986.82/61,307.49
  6. Step 6: Final answer
    x = 32,807.88

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