Home / 57,217.58-85,830.14-19,781.27

Finding the Fourth Proportional to 57,217.58, 85,830.14 and 19,781.27

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Solution

The fourth proportional to 57,217.58, 85,830.14 and 19,781.27 is: 29,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,217.58 : 85,830.14 = 19,781.27 : x
  2. Step 2: Convert to fraction form
    57,217.58/85,830.14 = 19,781.27/x
  3. Step 3: Cross multiply
    57,217.58x = 85,830.14 × 19,781.27
  4. Step 4: Simplify right side
    57,217.58x = 1,697,828,645.42
  5. Step 5: Solve for x
    x = 1,697,828,645.42/57,217.58
  6. Step 6: Final answer
    x = 29,673.20

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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.