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Finding the Fourth Proportional to 56,655.75, 84,985.43 and 17,213.21

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Solution

The fourth proportional to 56,655.75, 84,985.43 and 17,213.21 is: 25,820.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,655.75 : 84,985.43 = 17,213.21 : x
  2. Step 2: Convert to fraction form
    56,655.75/84,985.43 = 17,213.21/x
  3. Step 3: Cross multiply
    56,655.75x = 84,985.43 × 17,213.21
  4. Step 4: Simplify right side
    56,655.75x = 1,462,871,542.54
  5. Step 5: Solve for x
    x = 1,462,871,542.54/56,655.75
  6. Step 6: Final answer
    x = 25,820.35

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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.