Home / 77,888,679.89-116,829,771.71-20,379,677.81

Finding the Fourth Proportional to 77,888,679.89, 116,829,771.71 and 20,379,677.81

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Solution

The fourth proportional to 77,888,679.89, 116,829,771.71 and 20,379,677.81 is: 30,568,666.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,888,679.89 : 116,829,771.71 = 20,379,677.81 : x
  2. Step 2: Convert to fraction form
    77,888,679.89/116,829,771.71 = 20,379,677.81/x
  3. Step 3: Cross multiply
    77,888,679.89x = 116,829,771.71 × 20,379,677.81
  4. Step 4: Simplify right side
    77,888,679.89x = 2,380,953,105,379,605.50
  5. Step 5: Solve for x
    x = 2,380,953,105,379,605.50/77,888,679.89
  6. Step 6: Final answer
    x = 30,568,666.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.