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Finding the Fourth Proportional to 57,801.87, 79,742.48 and 38,906.19

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Solution

The fourth proportional to 57,801.87, 79,742.48 and 38,906.19 is: 53,674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,801.87 : 79,742.48 = 38,906.19 : x
  2. Step 2: Convert to fraction form
    57,801.87/79,742.48 = 38,906.19/x
  3. Step 3: Cross multiply
    57,801.87x = 79,742.48 × 38,906.19
  4. Step 4: Simplify right side
    57,801.87x = 3,102,475,883.42
  5. Step 5: Solve for x
    x = 3,102,475,883.42/57,801.87
  6. Step 6: Final answer
    x = 53,674.32

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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.