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Finding the Fourth Proportional to 83,779.76, 115,530.36 and 55,475.12

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Solution

The fourth proportional to 83,779.76, 115,530.36 and 55,475.12 is: 76,498.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,779.76 : 115,530.36 = 55,475.12 : x
  2. Step 2: Convert to fraction form
    83,779.76/115,530.36 = 55,475.12/x
  3. Step 3: Cross multiply
    83,779.76x = 115,530.36 × 55,475.12
  4. Step 4: Simplify right side
    83,779.76x = 6,409,060,584.64
  5. Step 5: Solve for x
    x = 6,409,060,584.64/83,779.76
  6. Step 6: Final answer
    x = 76,498.91

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