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Finding the Fourth Proportional to 85,494.61, 128,201.55 and 49,966.12

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Solution

The fourth proportional to 85,494.61, 128,201.55 and 49,966.12 is: 74,925.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,494.61 : 128,201.55 = 49,966.12 : x
  2. Step 2: Convert to fraction form
    85,494.61/128,201.55 = 49,966.12/x
  3. Step 3: Cross multiply
    85,494.61x = 128,201.55 × 49,966.12
  4. Step 4: Simplify right side
    85,494.61x = 6,405,734,031.49
  5. Step 5: Solve for x
    x = 6,405,734,031.49/85,494.61
  6. Step 6: Final answer
    x = 74,925.59

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