Home / 74,321.16-102,562.92-40,329.78

Finding the Fourth Proportional to 74,321.16, 102,562.92 and 40,329.78

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Solution

The fourth proportional to 74,321.16, 102,562.92 and 40,329.78 is: 55,654.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,321.16 : 102,562.92 = 40,329.78 : x
  2. Step 2: Convert to fraction form
    74,321.16/102,562.92 = 40,329.78/x
  3. Step 3: Cross multiply
    74,321.16x = 102,562.92 × 40,329.78
  4. Step 4: Simplify right side
    74,321.16x = 4,136,339,999.76
  5. Step 5: Solve for x
    x = 4,136,339,999.76/74,321.16
  6. Step 6: Final answer
    x = 55,654.94

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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.