Home / 74,543.24-102,871.55-40,553.64

Finding the Fourth Proportional to 74,543.24, 102,871.55 and 40,553.64

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Solution

The fourth proportional to 74,543.24, 102,871.55 and 40,553.64 is: 55,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,543.24 : 102,871.55 = 40,553.64 : x
  2. Step 2: Convert to fraction form
    74,543.24/102,871.55 = 40,553.64/x
  3. Step 3: Cross multiply
    74,543.24x = 102,871.55 × 40,553.64
  4. Step 4: Simplify right side
    74,543.24x = 4,171,815,804.94
  5. Step 5: Solve for x
    x = 4,171,815,804.94/74,543.24
  6. Step 6: Final answer
    x = 55,965.05

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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.