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Finding the Fourth Proportional to 38,871.63, 53,672.99 and 30,358.89

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Solution

The fourth proportional to 38,871.63, 53,672.99 and 30,358.89 is: 41,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,871.63 : 53,672.99 = 30,358.89 : x
  2. Step 2: Convert to fraction form
    38,871.63/53,672.99 = 30,358.89/x
  3. Step 3: Cross multiply
    38,871.63x = 53,672.99 × 30,358.89
  4. Step 4: Simplify right side
    38,871.63x = 1,629,452,247.59
  5. Step 5: Solve for x
    x = 1,629,452,247.59/38,871.63
  6. Step 6: Final answer
    x = 41,918.80

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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.