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Finding the Fourth Proportional to 56,394.63, 84,597.65 and 20,865.33

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Solution

The fourth proportional to 56,394.63, 84,597.65 and 20,865.33 is: 31,300.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,394.63 : 84,597.65 = 20,865.33 : x
  2. Step 2: Convert to fraction form
    56,394.63/84,597.65 = 20,865.33/x
  3. Step 3: Cross multiply
    56,394.63x = 84,597.65 × 20,865.33
  4. Step 4: Simplify right side
    56,394.63x = 1,765,157,513.65
  5. Step 5: Solve for x
    x = 1,765,157,513.65/56,394.63
  6. Step 6: Final answer
    x = 31,300.10

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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.