Home / 66,218.99-99,203.31-51,251.72

Finding the Fourth Proportional to 66,218.99, 99,203.31 and 51,251.72

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Solution

The fourth proportional to 66,218.99, 99,203.31 and 51,251.72 is: 76,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,218.99 : 99,203.31 = 51,251.72 : x
  2. Step 2: Convert to fraction form
    66,218.99/99,203.31 = 51,251.72/x
  3. Step 3: Cross multiply
    66,218.99x = 99,203.31 × 51,251.72
  4. Step 4: Simplify right side
    66,218.99x = 5,084,339,771.18
  5. Step 5: Solve for x
    x = 5,084,339,771.18/66,218.99
  6. Step 6: Final answer
    x = 76,780.70

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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.