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Finding the Fourth Proportional to 56,643.80, 84,944.10 and 17,187.80

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Solution

The fourth proportional to 56,643.80, 84,944.10 and 17,187.80 is: 25,775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,643.80 : 84,944.10 = 17,187.80 : x
  2. Step 2: Convert to fraction form
    56,643.80/84,944.10 = 17,187.80/x
  3. Step 3: Cross multiply
    56,643.80x = 84,944.10 × 17,187.80
  4. Step 4: Simplify right side
    56,643.80x = 1,460,002,201.98
  5. Step 5: Solve for x
    x = 1,460,002,201.98/56,643.80
  6. Step 6: Final answer
    x = 25,775.15

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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.