Home / 72,727.68-108,378.24-72,115.32

Finding the Fourth Proportional to 72,727.68, 108,378.24 and 72,115.32

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Solution

The fourth proportional to 72,727.68, 108,378.24 and 72,115.32 is: 107,465.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,727.68 : 108,378.24 = 72,115.32 : x
  2. Step 2: Convert to fraction form
    72,727.68/108,378.24 = 72,115.32/x
  3. Step 3: Cross multiply
    72,727.68x = 108,378.24 × 72,115.32
  4. Step 4: Simplify right side
    72,727.68x = 7,815,731,458.64
  5. Step 5: Solve for x
    x = 7,815,731,458.64/72,727.68
  6. Step 6: Final answer
    x = 107,465.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.