Home / 74,530.08-102,858.32-42,709.28

Finding the Fourth Proportional to 74,530.08, 102,858.32 and 42,709.28

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Solution

The fourth proportional to 74,530.08, 102,858.32 and 42,709.28 is: 58,942.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,530.08 : 102,858.32 = 42,709.28 : x
  2. Step 2: Convert to fraction form
    74,530.08/102,858.32 = 42,709.28/x
  3. Step 3: Cross multiply
    74,530.08x = 102,858.32 × 42,709.28
  4. Step 4: Simplify right side
    74,530.08x = 4,393,004,789.21
  5. Step 5: Solve for x
    x = 4,393,004,789.21/74,530.08
  6. Step 6: Final answer
    x = 58,942.71

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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.