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Finding the Fourth Proportional to 56,472.40, 84,716.43 and 19,043.20

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Solution

The fourth proportional to 56,472.40, 84,716.43 and 19,043.20 is: 28,567.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,472.40 : 84,716.43 = 19,043.20 : x
  2. Step 2: Convert to fraction form
    56,472.40/84,716.43 = 19,043.20/x
  3. Step 3: Cross multiply
    56,472.40x = 84,716.43 × 19,043.20
  4. Step 4: Simplify right side
    56,472.40x = 1,613,271,919.78
  5. Step 5: Solve for x
    x = 1,613,271,919.78/56,472.40
  6. Step 6: Final answer
    x = 28,567.44

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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.