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Finding the Fourth Proportional to 56,198.88, 84,302.64 and 21,137.76

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Solution

The fourth proportional to 56,198.88, 84,302.64 and 21,137.76 is: 31,708.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,198.88 : 84,302.64 = 21,137.76 : x
  2. Step 2: Convert to fraction form
    56,198.88/84,302.64 = 21,137.76/x
  3. Step 3: Cross multiply
    56,198.88x = 84,302.64 × 21,137.76
  4. Step 4: Simplify right side
    56,198.88x = 1,781,968,971.69
  5. Step 5: Solve for x
    x = 1,781,968,971.69/56,198.88
  6. Step 6: Final answer
    x = 31,708.26

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1.5x scale

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.