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Finding the Fourth Proportional to 72,946.40, 109,375.80 and 28,520.18

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Solution

The fourth proportional to 72,946.40, 109,375.80 and 28,520.18 is: 42,763.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,946.40 : 109,375.80 = 28,520.18 : x
  2. Step 2: Convert to fraction form
    72,946.40/109,375.80 = 28,520.18/x
  3. Step 3: Cross multiply
    72,946.40x = 109,375.80 × 28,520.18
  4. Step 4: Simplify right side
    72,946.40x = 3,119,417,503.64
  5. Step 5: Solve for x
    x = 3,119,417,503.64/72,946.40
  6. Step 6: Final answer
    x = 42,763.15

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