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Finding the Fourth Proportional to 56,843.28, 85,239 and 36,820.08

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Solution

The fourth proportional to 56,843.28, 85,239 and 36,820.08 is: 55,213.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,843.28 : 85,239 = 36,820.08 : x
  2. Step 2: Convert to fraction form
    56,843.28/85,239 = 36,820.08/x
  3. Step 3: Cross multiply
    56,843.28x = 85,239 × 36,820.08
  4. Step 4: Simplify right side
    56,843.28x = 3,138,506,799.12
  5. Step 5: Solve for x
    x = 3,138,506,799.12/56,843.28
  6. Step 6: Final answer
    x = 55,213.33

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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.