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Finding the Fourth Proportional to 47,315.84, 70,938.12 and 28,591.88

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Solution

The fourth proportional to 47,315.84, 70,938.12 and 28,591.88 is: 42,866.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,315.84 : 70,938.12 = 28,591.88 : x
  2. Step 2: Convert to fraction form
    47,315.84/70,938.12 = 28,591.88/x
  3. Step 3: Cross multiply
    47,315.84x = 70,938.12 × 28,591.88
  4. Step 4: Simplify right side
    47,315.84x = 2,028,254,214.47
  5. Step 5: Solve for x
    x = 2,028,254,214.47/47,315.84
  6. Step 6: Final answer
    x = 42,866.28

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