Home / 77,004,676.50-115,505,926.38-18,712,782.96

Finding the Fourth Proportional to 77,004,676.50, 115,505,926.38 and 18,712,782.96

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Solution

The fourth proportional to 77,004,676.50, 115,505,926.38 and 18,712,782.96 is: 28,068,909.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,004,676.50 : 115,505,926.38 = 18,712,782.96 : x
  2. Step 2: Convert to fraction form
    77,004,676.50/115,505,926.38 = 18,712,782.96/x
  3. Step 3: Cross multiply
    77,004,676.50x = 115,505,926.38 × 18,712,782.96
  4. Step 4: Simplify right side
    77,004,676.50x = 2,161,437,330,942,678.50
  5. Step 5: Solve for x
    x = 2,161,437,330,942,678.50/77,004,676.50
  6. Step 6: Final answer
    x = 28,068,909.96

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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.