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Finding the Fourth Proportional to 56,018.42, 84,060.30 and 20,982.68

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Solution

The fourth proportional to 56,018.42, 84,060.30 and 20,982.68 is: 31,486.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,018.42 : 84,060.30 = 20,982.68 : x
  2. Step 2: Convert to fraction form
    56,018.42/84,060.30 = 20,982.68/x
  3. Step 3: Cross multiply
    56,018.42x = 84,060.30 × 20,982.68
  4. Step 4: Simplify right side
    56,018.42x = 1,763,810,375.60
  5. Step 5: Solve for x
    x = 1,763,810,375.60/56,018.42
  6. Step 6: Final answer
    x = 31,486.26

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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.