Home / 80,779,131.72-121,078,942.92-61,546,478.76

Finding the Fourth Proportional to 80,779,131.72, 121,078,942.92 and 61,546,478.76

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Solution

The fourth proportional to 80,779,131.72, 121,078,942.92 and 61,546,478.76 is: 92,251,333.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,779,131.72 : 121,078,942.92 = 61,546,478.76 : x
  2. Step 2: Convert to fraction form
    80,779,131.72/121,078,942.92 = 61,546,478.76/x
  3. Step 3: Cross multiply
    80,779,131.72x = 121,078,942.92 × 61,546,478.76
  4. Step 4: Simplify right side
    80,779,131.72x = 7,451,982,588,709,032
  5. Step 5: Solve for x
    x = 7,451,982,588,709,032/80,779,131.72
  6. Step 6: Final answer
    x = 92,251,333.11

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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.