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Finding the Fourth Proportional to 57,556.80, 79,440.63 and 38,682.99

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Solution

The fourth proportional to 57,556.80, 79,440.63 and 38,682.99 is: 53,390.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,556.80 : 79,440.63 = 38,682.99 : x
  2. Step 2: Convert to fraction form
    57,556.80/79,440.63 = 38,682.99/x
  3. Step 3: Cross multiply
    57,556.80x = 79,440.63 × 38,682.99
  4. Step 4: Simplify right side
    57,556.80x = 3,073,001,095.88
  5. Step 5: Solve for x
    x = 3,073,001,095.88/57,556.80
  6. Step 6: Final answer
    x = 53,390.76

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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.