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Finding the Fourth Proportional to 57,521.75, 79,404.50 and 38,669.81

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Solution

The fourth proportional to 57,521.75, 79,404.50 and 38,669.81 is: 53,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,521.75 : 79,404.50 = 38,669.81 : x
  2. Step 2: Convert to fraction form
    57,521.75/79,404.50 = 38,669.81/x
  3. Step 3: Cross multiply
    57,521.75x = 79,404.50 × 38,669.81
  4. Step 4: Simplify right side
    57,521.75x = 3,070,556,627.80
  5. Step 5: Solve for x
    x = 3,070,556,627.80/57,521.75
  6. Step 6: Final answer
    x = 53,380.80

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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.