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Finding the Fourth Proportional to 72,067.03, 99,493.99 and 47,900.75

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Solution

The fourth proportional to 72,067.03, 99,493.99 and 47,900.75 is: 66,130.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,067.03 : 99,493.99 = 47,900.75 : x
  2. Step 2: Convert to fraction form
    72,067.03/99,493.99 = 47,900.75/x
  3. Step 3: Cross multiply
    72,067.03x = 99,493.99 × 47,900.75
  4. Step 4: Simplify right side
    72,067.03x = 4,765,836,960.29
  5. Step 5: Solve for x
    x = 4,765,836,960.29/72,067.03
  6. Step 6: Final answer
    x = 66,130.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.