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Finding the Fourth Proportional to 56,884.80, 85,321.28 and 15,329.28

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Solution

The fourth proportional to 56,884.80, 85,321.28 and 15,329.28 is: 22,992.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,884.80 : 85,321.28 = 15,329.28 : x
  2. Step 2: Convert to fraction form
    56,884.80/85,321.28 = 15,329.28/x
  3. Step 3: Cross multiply
    56,884.80x = 85,321.28 × 15,329.28
  4. Step 4: Simplify right side
    56,884.80x = 1,307,913,791.08
  5. Step 5: Solve for x
    x = 1,307,913,791.08/56,884.80
  6. Step 6: Final answer
    x = 22,992.32

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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.