Home / 39,861.81-55,001.22-30,299.15

Finding the Fourth Proportional to 39,861.81, 55,001.22 and 30,299.15

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Solution

The fourth proportional to 39,861.81, 55,001.22 and 30,299.15 is: 41,806.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.81 : 55,001.22 = 30,299.15 : x
  2. Step 2: Convert to fraction form
    39,861.81/55,001.22 = 30,299.15/x
  3. Step 3: Cross multiply
    39,861.81x = 55,001.22 × 30,299.15
  4. Step 4: Simplify right side
    39,861.81x = 1,666,489,939.96
  5. Step 5: Solve for x
    x = 1,666,489,939.96/39,861.81
  6. Step 6: Final answer
    x = 41,806.68

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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.