Home / 72,749.82-100,386.62-40,918.04

Finding the Fourth Proportional to 72,749.82, 100,386.62 and 40,918.04

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Solution

The fourth proportional to 72,749.82, 100,386.62 and 40,918.04 is: 56,462.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,749.82 : 100,386.62 = 40,918.04 : x
  2. Step 2: Convert to fraction form
    72,749.82/100,386.62 = 40,918.04/x
  3. Step 3: Cross multiply
    72,749.82x = 100,386.62 × 40,918.04
  4. Step 4: Simplify right side
    72,749.82x = 4,107,623,230.69
  5. Step 5: Solve for x
    x = 4,107,623,230.69/72,749.82
  6. Step 6: Final answer
    x = 56,462.31

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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.