Home / 56,781.20-85,056.60-32,128.40

Finding the Fourth Proportional to 56,781.20, 85,056.60 and 32,128.40

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Solution

The fourth proportional to 56,781.20, 85,056.60 and 32,128.40 is: 48,127.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,781.20 : 85,056.60 = 32,128.40 : x
  2. Step 2: Convert to fraction form
    56,781.20/85,056.60 = 32,128.40/x
  3. Step 3: Cross multiply
    56,781.20x = 85,056.60 × 32,128.40
  4. Step 4: Simplify right side
    56,781.20x = 2,732,732,467.44
  5. Step 5: Solve for x
    x = 2,732,732,467.44/56,781.20
  6. Step 6: Final answer
    x = 48,127.42

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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.