Home / 28,305,449.10-42,414,628.05-21,083,100.30

Finding the Fourth Proportional to 28,305,449.10, 42,414,628.05 and 21,083,100.30

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Solution

The fourth proportional to 28,305,449.10, 42,414,628.05 and 21,083,100.30 is: 31,592,215.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305,449.10 : 42,414,628.05 = 21,083,100.30 : x
  2. Step 2: Convert to fraction form
    28,305,449.10/42,414,628.05 = 21,083,100.30/x
  3. Step 3: Cross multiply
    28,305,449.10x = 42,414,628.05 × 21,083,100.30
  4. Step 4: Simplify right side
    28,305,449.10x = 894,231,857,365,343.38
  5. Step 5: Solve for x
    x = 894,231,857,365,343.38/28,305,449.10
  6. Step 6: Final answer
    x = 31,592,215.84

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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.