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Finding the Fourth Proportional to 57,794.94, 86,717.45 and 20,381.74

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Solution

The fourth proportional to 57,794.94, 86,717.45 and 20,381.74 is: 30,581.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,794.94 : 86,717.45 = 20,381.74 : x
  2. Step 2: Convert to fraction form
    57,794.94/86,717.45 = 20,381.74/x
  3. Step 3: Cross multiply
    57,794.94x = 86,717.45 × 20,381.74
  4. Step 4: Simplify right side
    57,794.94x = 1,767,452,519.36
  5. Step 5: Solve for x
    x = 1,767,452,519.36/57,794.94
  6. Step 6: Final answer
    x = 30,581.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.