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Finding the Fourth Proportional to 56,103.20, 84,187.20 and 21,046.40

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Solution

The fourth proportional to 56,103.20, 84,187.20 and 21,046.40 is: 31,581.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,103.20 : 84,187.20 = 21,046.40 : x
  2. Step 2: Convert to fraction form
    56,103.20/84,187.20 = 21,046.40/x
  3. Step 3: Cross multiply
    56,103.20x = 84,187.20 × 21,046.40
  4. Step 4: Simplify right side
    56,103.20x = 1,771,837,486.08
  5. Step 5: Solve for x
    x = 1,771,837,486.08/56,103.20
  6. Step 6: Final answer
    x = 31,581.75

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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.