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Finding the Fourth Proportional to 47,273.20, 70,909.80 and 42,899.20

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Solution

The fourth proportional to 47,273.20, 70,909.80 and 42,899.20 is: 64,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,273.20 : 70,909.80 = 42,899.20 : x
  2. Step 2: Convert to fraction form
    47,273.20/70,909.80 = 42,899.20/x
  3. Step 3: Cross multiply
    47,273.20x = 70,909.80 × 42,899.20
  4. Step 4: Simplify right side
    47,273.20x = 3,041,973,692.16
  5. Step 5: Solve for x
    x = 3,041,973,692.16/47,273.20
  6. Step 6: Final answer
    x = 64,348.80

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