Home / 76,731,866.80-105,936,901.32-49,934,731.84

Finding the Fourth Proportional to 76,731,866.80, 105,936,901.32 and 49,934,731.84

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Solution

The fourth proportional to 76,731,866.80, 105,936,901.32 and 49,934,731.84 is: 68,940,467.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,731,866.80 : 105,936,901.32 = 49,934,731.84 : x
  2. Step 2: Convert to fraction form
    76,731,866.80/105,936,901.32 = 49,934,731.84/x
  3. Step 3: Cross multiply
    76,731,866.80x = 105,936,901.32 × 49,934,731.84
  4. Step 4: Simplify right side
    76,731,866.80x = 5,289,930,759,374,742
  5. Step 5: Solve for x
    x = 5,289,930,759,374,742/76,731,866.80
  6. Step 6: Final answer
    x = 68,940,467.37

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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.