Home / 74,507.45-102,821.49-40,516.61

Finding the Fourth Proportional to 74,507.45, 102,821.49 and 40,516.61

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Solution

The fourth proportional to 74,507.45, 102,821.49 and 40,516.61 is: 55,913.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,507.45 : 102,821.49 = 40,516.61 : x
  2. Step 2: Convert to fraction form
    74,507.45/102,821.49 = 40,516.61/x
  3. Step 3: Cross multiply
    74,507.45x = 102,821.49 × 40,516.61
  4. Step 4: Simplify right side
    74,507.45x = 4,165,977,695.84
  5. Step 5: Solve for x
    x = 4,165,977,695.84/74,507.45
  6. Step 6: Final answer
    x = 55,913.58

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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.