Home / 81,987.55-122,703.33-50,417.44

Finding the Fourth Proportional to 81,987.55, 122,703.33 and 50,417.44

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Solution

The fourth proportional to 81,987.55, 122,703.33 and 50,417.44 is: 75,455.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,987.55 : 122,703.33 = 50,417.44 : x
  2. Step 2: Convert to fraction form
    81,987.55/122,703.33 = 50,417.44/x
  3. Step 3: Cross multiply
    81,987.55x = 122,703.33 × 50,417.44
  4. Step 4: Simplify right side
    81,987.55x = 6,186,387,778.08
  5. Step 5: Solve for x
    x = 6,186,387,778.08/81,987.55
  6. Step 6: Final answer
    x = 75,455.21

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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.