Home / 81,435,498.75-122,152,181.95-20,025,187.56

Finding the Fourth Proportional to 81,435,498.75, 122,152,181.95 and 20,025,187.56

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Solution

The fourth proportional to 81,435,498.75, 122,152,181.95 and 20,025,187.56 is: 30,037,519.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,435,498.75 : 122,152,181.95 = 20,025,187.56 : x
  2. Step 2: Convert to fraction form
    81,435,498.75/122,152,181.95 = 20,025,187.56/x
  3. Step 3: Cross multiply
    81,435,498.75x = 122,152,181.95 × 20,025,187.56
  4. Step 4: Simplify right side
    81,435,498.75x = 2,446,120,354,411,996.50
  5. Step 5: Solve for x
    x = 2,446,120,354,411,996.50/81,435,498.75
  6. Step 6: Final answer
    x = 30,037,519.16

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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.