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Finding the Fourth Proportional to 91,275.16, 136,933.80 and 38,686.72

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Solution

The fourth proportional to 91,275.16, 136,933.80 and 38,686.72 is: 58,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,275.16 : 136,933.80 = 38,686.72 : x
  2. Step 2: Convert to fraction form
    91,275.16/136,933.80 = 38,686.72/x
  3. Step 3: Cross multiply
    91,275.16x = 136,933.80 × 38,686.72
  4. Step 4: Simplify right side
    91,275.16x = 5,297,519,579.14
  5. Step 5: Solve for x
    x = 5,297,519,579.14/91,275.16
  6. Step 6: Final answer
    x = 58,039.01

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