Home / 40,908.12-61,407.74-21,181.38

Finding the Fourth Proportional to 40,908.12, 61,407.74 and 21,181.38

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Solution

The fourth proportional to 40,908.12, 61,407.74 and 21,181.38 is: 31,795.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,908.12 : 61,407.74 = 21,181.38 : x
  2. Step 2: Convert to fraction form
    40,908.12/61,407.74 = 21,181.38/x
  3. Step 3: Cross multiply
    40,908.12x = 61,407.74 × 21,181.38
  4. Step 4: Simplify right side
    40,908.12x = 1,300,700,675.88
  5. Step 5: Solve for x
    x = 1,300,700,675.88/40,908.12
  6. Step 6: Final answer
    x = 31,795.66

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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.