Home / 72,673.37-100,338.18-64,992.78

Finding the Fourth Proportional to 72,673.37, 100,338.18 and 64,992.78

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Solution

The fourth proportional to 72,673.37, 100,338.18 and 64,992.78 is: 89,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,673.37 : 100,338.18 = 64,992.78 : x
  2. Step 2: Convert to fraction form
    72,673.37/100,338.18 = 64,992.78/x
  3. Step 3: Cross multiply
    72,673.37x = 100,338.18 × 64,992.78
  4. Step 4: Simplify right side
    72,673.37x = 6,521,257,258.34
  5. Step 5: Solve for x
    x = 6,521,257,258.34/72,673.37
  6. Step 6: Final answer
    x = 89,733.79

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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.