Home / 74,310.72-102,579.12-55,415.04

Finding the Fourth Proportional to 74,310.72, 102,579.12 and 55,415.04

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Solution

The fourth proportional to 74,310.72, 102,579.12 and 55,415.04 is: 76,495.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,310.72 : 102,579.12 = 55,415.04 : x
  2. Step 2: Convert to fraction form
    74,310.72/102,579.12 = 55,415.04/x
  3. Step 3: Cross multiply
    74,310.72x = 102,579.12 × 55,415.04
  4. Step 4: Simplify right side
    74,310.72x = 5,684,426,037.96
  5. Step 5: Solve for x
    x = 5,684,426,037.96/74,310.72
  6. Step 6: Final answer
    x = 76,495.37

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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.