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Finding the Fourth Proportional to 73,129.24, 100,918.74 and 39,595.24

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Solution

The fourth proportional to 73,129.24, 100,918.74 and 39,595.24 is: 54,641.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,129.24 : 100,918.74 = 39,595.24 : x
  2. Step 2: Convert to fraction form
    73,129.24/100,918.74 = 39,595.24/x
  3. Step 3: Cross multiply
    73,129.24x = 100,918.74 × 39,595.24
  4. Step 4: Simplify right side
    73,129.24x = 3,995,901,730.80
  5. Step 5: Solve for x
    x = 3,995,901,730.80/73,129.24
  6. Step 6: Final answer
    x = 54,641.64

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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.