Home / 104,640.81-156,944.43-28,721.63

Finding the Fourth Proportional to 104,640.81, 156,944.43 and 28,721.63

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Solution

The fourth proportional to 104,640.81, 156,944.43 and 28,721.63 is: 43,077.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,640.81 : 156,944.43 = 28,721.63 : x
  2. Step 2: Convert to fraction form
    104,640.81/156,944.43 = 28,721.63/x
  3. Step 3: Cross multiply
    104,640.81x = 156,944.43 × 28,721.63
  4. Step 4: Simplify right side
    104,640.81x = 4,507,699,064.30
  5. Step 5: Solve for x
    x = 4,507,699,064.30/104,640.81
  6. Step 6: Final answer
    x = 43,077.83

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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.