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Finding the Fourth Proportional to 73,029.76, 100,781.36 and 39,495.76

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Solution

The fourth proportional to 73,029.76, 100,781.36 and 39,495.76 is: 54,504.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,029.76 : 100,781.36 = 39,495.76 : x
  2. Step 2: Convert to fraction form
    73,029.76/100,781.36 = 39,495.76/x
  3. Step 3: Cross multiply
    73,029.76x = 100,781.36 × 39,495.76
  4. Step 4: Simplify right side
    73,029.76x = 3,980,436,407.03
  5. Step 5: Solve for x
    x = 3,980,436,407.03/73,029.76
  6. Step 6: Final answer
    x = 54,504.31

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1.5x scale

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.