Home / 72,731,930.34-100,372,189.77-39,694,299.81

Finding the Fourth Proportional to 72,731,930.34, 100,372,189.77 and 39,694,299.81

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Solution

The fourth proportional to 72,731,930.34, 100,372,189.77 and 39,694,299.81 is: 54,779,293.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,731,930.34 : 100,372,189.77 = 39,694,299.81 : x
  2. Step 2: Convert to fraction form
    72,731,930.34/100,372,189.77 = 39,694,299.81/x
  3. Step 3: Cross multiply
    72,731,930.34x = 100,372,189.77 × 39,694,299.81
  4. Step 4: Simplify right side
    72,731,930.34x = 3,984,203,793,316,595
  5. Step 5: Solve for x
    x = 3,984,203,793,316,595/72,731,930.34
  6. Step 6: Final answer
    x = 54,779,293.97

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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.