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Finding the Fourth Proportional to 93,328.47, 128,813.40 and 55,073.79

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Solution

The fourth proportional to 93,328.47, 128,813.40 and 55,073.79 is: 76,013.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,328.47 : 128,813.40 = 55,073.79 : x
  2. Step 2: Convert to fraction form
    93,328.47/128,813.40 = 55,073.79/x
  3. Step 3: Cross multiply
    93,328.47x = 128,813.40 × 55,073.79
  4. Step 4: Simplify right side
    93,328.47x = 7,094,242,140.79
  5. Step 5: Solve for x
    x = 7,094,242,140.79/93,328.47
  6. Step 6: Final answer
    x = 76,013.70

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