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Finding the Fourth Proportional to 61,170.88, 91,619.36 and 53,170.88

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Solution

The fourth proportional to 61,170.88, 91,619.36 and 53,170.88 is: 79,637.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,170.88 : 91,619.36 = 53,170.88 : x
  2. Step 2: Convert to fraction form
    61,170.88/91,619.36 = 53,170.88/x
  3. Step 3: Cross multiply
    61,170.88x = 91,619.36 × 53,170.88
  4. Step 4: Simplify right side
    61,170.88x = 4,871,481,996.24
  5. Step 5: Solve for x
    x = 4,871,481,996.24/61,170.88
  6. Step 6: Final answer
    x = 79,637.27

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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.