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Finding the Fourth Proportional to 90,072.76, 135,128.45 and 26,897.86

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Solution

The fourth proportional to 90,072.76, 135,128.45 and 26,897.86 is: 40,352.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,072.76 : 135,128.45 = 26,897.86 : x
  2. Step 2: Convert to fraction form
    90,072.76/135,128.45 = 26,897.86/x
  3. Step 3: Cross multiply
    90,072.76x = 135,128.45 × 26,897.86
  4. Step 4: Simplify right side
    90,072.76x = 3,634,666,130.12
  5. Step 5: Solve for x
    x = 3,634,666,130.12/90,072.76
  6. Step 6: Final answer
    x = 40,352.56

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