Home / 72,149.94-99,563.58-40,318.56

Finding the Fourth Proportional to 72,149.94, 99,563.58 and 40,318.56

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Solution

The fourth proportional to 72,149.94, 99,563.58 and 40,318.56 is: 55,637.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,149.94 : 99,563.58 = 40,318.56 : x
  2. Step 2: Convert to fraction form
    72,149.94/99,563.58 = 40,318.56/x
  3. Step 3: Cross multiply
    72,149.94x = 99,563.58 × 40,318.56
  4. Step 4: Simplify right side
    72,149.94x = 4,014,260,174.04
  5. Step 5: Solve for x
    x = 4,014,260,174.04/72,149.94
  6. Step 6: Final answer
    x = 55,637.75

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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.