Home / 74,314.10-111,458.31-21,009.86

Finding the Fourth Proportional to 74,314.10, 111,458.31 and 21,009.86

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Solution

The fourth proportional to 74,314.10, 111,458.31 and 21,009.86 is: 31,511.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,314.10 : 111,458.31 = 21,009.86 : x
  2. Step 2: Convert to fraction form
    74,314.10/111,458.31 = 21,009.86/x
  3. Step 3: Cross multiply
    74,314.10x = 111,458.31 × 21,009.86
  4. Step 4: Simplify right side
    74,314.10x = 2,341,723,488.94
  5. Step 5: Solve for x
    x = 2,341,723,488.94/74,314.10
  6. Step 6: Final answer
    x = 31,511.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.