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Finding the Fourth Proportional to 78,265.98, 117,347.91 and 51,531.05

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Solution

The fourth proportional to 78,265.98, 117,347.91 and 51,531.05 is: 77,262.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,265.98 : 117,347.91 = 51,531.05 : x
  2. Step 2: Convert to fraction form
    78,265.98/117,347.91 = 51,531.05/x
  3. Step 3: Cross multiply
    78,265.98x = 117,347.91 × 51,531.05
  4. Step 4: Simplify right side
    78,265.98x = 6,047,060,430.87
  5. Step 5: Solve for x
    x = 6,047,060,430.87/78,265.98
  6. Step 6: Final answer
    x = 77,262.95

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