Home / 66,215.86-99,321.58-28,775.94

Finding the Fourth Proportional to 66,215.86, 99,321.58 and 28,775.94

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Solution

The fourth proportional to 66,215.86, 99,321.58 and 28,775.94 is: 43,162.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,215.86 : 99,321.58 = 28,775.94 : x
  2. Step 2: Convert to fraction form
    66,215.86/99,321.58 = 28,775.94/x
  3. Step 3: Cross multiply
    66,215.86x = 99,321.58 × 28,775.94
  4. Step 4: Simplify right side
    66,215.86x = 2,858,071,357.95
  5. Step 5: Solve for x
    x = 2,858,071,357.95/66,215.86
  6. Step 6: Final answer
    x = 43,162.94

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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.