Home / 74,336.40-102,583.80-40,345.56

Finding the Fourth Proportional to 74,336.40, 102,583.80 and 40,345.56

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Solution

The fourth proportional to 74,336.40, 102,583.80 and 40,345.56 is: 55,676.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,336.40 : 102,583.80 = 40,345.56 : x
  2. Step 2: Convert to fraction form
    74,336.40/102,583.80 = 40,345.56/x
  3. Step 3: Cross multiply
    74,336.40x = 102,583.80 × 40,345.56
  4. Step 4: Simplify right side
    74,336.40x = 4,138,800,857.93
  5. Step 5: Solve for x
    x = 4,138,800,857.93/74,336.40
  6. Step 6: Final answer
    x = 55,676.64

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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.