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Finding the Fourth Proportional to 51,091.72, 70,507.20 and 28,735.72

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Solution

The fourth proportional to 51,091.72, 70,507.20 and 28,735.72 is: 39,655.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,091.72 : 70,507.20 = 28,735.72 : x
  2. Step 2: Convert to fraction form
    51,091.72/70,507.20 = 28,735.72/x
  3. Step 3: Cross multiply
    51,091.72x = 70,507.20 × 28,735.72
  4. Step 4: Simplify right side
    51,091.72x = 2,026,075,157.18
  5. Step 5: Solve for x
    x = 2,026,075,157.18/51,091.72
  6. Step 6: Final answer
    x = 39,655.65

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