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Finding the Fourth Proportional to 65,348.03, 90,166.50 and 42,720.33

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Solution

The fourth proportional to 65,348.03, 90,166.50 and 42,720.33 is: 58,945.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,348.03 : 90,166.50 = 42,720.33 : x
  2. Step 2: Convert to fraction form
    65,348.03/90,166.50 = 42,720.33/x
  3. Step 3: Cross multiply
    65,348.03x = 90,166.50 × 42,720.33
  4. Step 4: Simplify right side
    65,348.03x = 3,851,942,634.95
  5. Step 5: Solve for x
    x = 3,851,942,634.95/65,348.03
  6. Step 6: Final answer
    x = 58,945.05

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