Home / 74,521.82-102,840.54-40,530.71

Finding the Fourth Proportional to 74,521.82, 102,840.54 and 40,530.71

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Solution

The fourth proportional to 74,521.82, 102,840.54 and 40,530.71 is: 55,932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,521.82 : 102,840.54 = 40,530.71 : x
  2. Step 2: Convert to fraction form
    74,521.82/102,840.54 = 40,530.71/x
  3. Step 3: Cross multiply
    74,521.82x = 102,840.54 × 40,530.71
  4. Step 4: Simplify right side
    74,521.82x = 4,168,200,102.98
  5. Step 5: Solve for x
    x = 4,168,200,102.98/74,521.82
  6. Step 6: Final answer
    x = 55,932.61

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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.