Home / 72,168.08-99,591.66-40,336.94

Finding the Fourth Proportional to 72,168.08, 99,591.66 and 40,336.94

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Solution

The fourth proportional to 72,168.08, 99,591.66 and 40,336.94 is: 55,664.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,168.08 : 99,591.66 = 40,336.94 : x
  2. Step 2: Convert to fraction form
    72,168.08/99,591.66 = 40,336.94/x
  3. Step 3: Cross multiply
    72,168.08x = 99,591.66 × 40,336.94
  4. Step 4: Simplify right side
    72,168.08x = 4,017,222,813.92
  5. Step 5: Solve for x
    x = 4,017,222,813.92/72,168.08
  6. Step 6: Final answer
    x = 55,664.81

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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.