Home / 74,966.24-103,405.62-57,021.86

Finding the Fourth Proportional to 74,966.24, 103,405.62 and 57,021.86

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Solution

The fourth proportional to 74,966.24, 103,405.62 and 57,021.86 is: 78,653.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,966.24 : 103,405.62 = 57,021.86 : x
  2. Step 2: Convert to fraction form
    74,966.24/103,405.62 = 57,021.86/x
  3. Step 3: Cross multiply
    74,966.24x = 103,405.62 × 57,021.86
  4. Step 4: Simplify right side
    74,966.24x = 5,896,380,786.85
  5. Step 5: Solve for x
    x = 5,896,380,786.85/74,966.24
  6. Step 6: Final answer
    x = 78,653.82

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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.