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Finding the Fourth Proportional to 71,993.09, 99,304.21 and 43,698.78

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Solution

The fourth proportional to 71,993.09, 99,304.21 and 43,698.78 is: 60,276.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,993.09 : 99,304.21 = 43,698.78 : x
  2. Step 2: Convert to fraction form
    71,993.09/99,304.21 = 43,698.78/x
  3. Step 3: Cross multiply
    71,993.09x = 99,304.21 × 43,698.78
  4. Step 4: Simplify right side
    71,993.09x = 4,339,472,607.37
  5. Step 5: Solve for x
    x = 4,339,472,607.37/71,993.09
  6. Step 6: Final answer
    x = 60,276.24

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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.