Home / 57,798.18-86,722.32-20,385

Finding the Fourth Proportional to 57,798.18, 86,722.32 and 20,385

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Solution

The fourth proportional to 57,798.18, 86,722.32 and 20,385 is: 30,586.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,798.18 : 86,722.32 = 20,385 : x
  2. Step 2: Convert to fraction form
    57,798.18/86,722.32 = 20,385/x
  3. Step 3: Cross multiply
    57,798.18x = 86,722.32 × 20,385
  4. Step 4: Simplify right side
    57,798.18x = 1,767,834,493.20
  5. Step 5: Solve for x
    x = 1,767,834,493.20/57,798.18
  6. Step 6: Final answer
    x = 30,586.33

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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.