Home / 76,786,548.63-105,965,811.75-41,979,240.78

Finding the Fourth Proportional to 76,786,548.63, 105,965,811.75 and 41,979,240.78

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Solution

The fourth proportional to 76,786,548.63, 105,965,811.75 and 41,979,240.78 is: 57,931,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,786,548.63 : 105,965,811.75 = 41,979,240.78 : x
  2. Step 2: Convert to fraction form
    76,786,548.63/105,965,811.75 = 41,979,240.78/x
  3. Step 3: Cross multiply
    76,786,548.63x = 105,965,811.75 × 41,979,240.78
  4. Step 4: Simplify right side
    76,786,548.63x = 4,448,364,325,901,403.50
  5. Step 5: Solve for x
    x = 4,448,364,325,901,403.50/76,786,548.63
  6. Step 6: Final answer
    x = 57,931,557.09

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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.