Home / 81,777,942-113,000,524.05-62,164,779.80

Finding the Fourth Proportional to 81,777,942, 113,000,524.05 and 62,164,779.80

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Solution

The fourth proportional to 81,777,942, 113,000,524.05 and 62,164,779.80 is: 85,899,113.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,777,942 : 113,000,524.05 = 62,164,779.80 : x
  2. Step 2: Convert to fraction form
    81,777,942/113,000,524.05 = 62,164,779.80/x
  3. Step 3: Cross multiply
    81,777,942x = 113,000,524.05 × 62,164,779.80
  4. Step 4: Simplify right side
    81,777,942x = 7,024,652,694,287,852
  5. Step 5: Solve for x
    x = 7,024,652,694,287,852/81,777,942
  6. Step 6: Final answer
    x = 85,899,113.17

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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.