Home / 72,458.81-99,998.95-40,196.61

Finding the Fourth Proportional to 72,458.81, 99,998.95 and 40,196.61

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Solution

The fourth proportional to 72,458.81, 99,998.95 and 40,196.61 is: 55,474.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,458.81 : 99,998.95 = 40,196.61 : x
  2. Step 2: Convert to fraction form
    72,458.81/99,998.95 = 40,196.61/x
  3. Step 3: Cross multiply
    72,458.81x = 99,998.95 × 40,196.61
  4. Step 4: Simplify right side
    72,458.81x = 4,019,618,793.56
  5. Step 5: Solve for x
    x = 4,019,618,793.56/72,458.81
  6. Step 6: Final answer
    x = 55,474.54

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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.