Home / 81,777,888.60-122,666,832.90-47,340,511.80

Finding the Fourth Proportional to 81,777,888.60, 122,666,832.90 and 47,340,511.80

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Solution

The fourth proportional to 81,777,888.60, 122,666,832.90 and 47,340,511.80 is: 71,010,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,777,888.60 : 122,666,832.90 = 47,340,511.80 : x
  2. Step 2: Convert to fraction form
    81,777,888.60/122,666,832.90 = 47,340,511.80/x
  3. Step 3: Cross multiply
    81,777,888.60x = 122,666,832.90 × 47,340,511.80
  4. Step 4: Simplify right side
    81,777,888.60x = 5,807,110,650,371,078
  5. Step 5: Solve for x
    x = 5,807,110,650,371,078/81,777,888.60
  6. Step 6: Final answer
    x = 71,010,767.70

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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.