Home / 43,223-64,836.60-21,009.92

Finding the Fourth Proportional to 43,223, 64,836.60 and 21,009.92

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Solution

The fourth proportional to 43,223, 64,836.60 and 21,009.92 is: 31,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,223 : 64,836.60 = 21,009.92 : x
  2. Step 2: Convert to fraction form
    43,223/64,836.60 = 21,009.92/x
  3. Step 3: Cross multiply
    43,223x = 64,836.60 × 21,009.92
  4. Step 4: Simplify right side
    43,223x = 1,362,211,779.07
  5. Step 5: Solve for x
    x = 1,362,211,779.07/43,223
  6. Step 6: Final answer
    x = 31,515.90

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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.