Home / 57,380.40-86,044.68-20,445.36

Finding the Fourth Proportional to 57,380.40, 86,044.68 and 20,445.36

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Solution

The fourth proportional to 57,380.40, 86,044.68 and 20,445.36 is: 30,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,380.40 : 86,044.68 = 20,445.36 : x
  2. Step 2: Convert to fraction form
    57,380.40/86,044.68 = 20,445.36/x
  3. Step 3: Cross multiply
    57,380.40x = 86,044.68 × 20,445.36
  4. Step 4: Simplify right side
    57,380.40x = 1,759,214,458.68
  5. Step 5: Solve for x
    x = 1,759,214,458.68/57,380.40
  6. Step 6: Final answer
    x = 30,658.80

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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.