Home / 81,531.55-122,309.48-28,936.63

Finding the Fourth Proportional to 81,531.55, 122,309.48 and 28,936.63

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Solution

The fourth proportional to 81,531.55, 122,309.48 and 28,936.63 is: 43,409.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,531.55 : 122,309.48 = 28,936.63 : x
  2. Step 2: Convert to fraction form
    81,531.55/122,309.48 = 28,936.63/x
  3. Step 3: Cross multiply
    81,531.55x = 122,309.48 × 28,936.63
  4. Step 4: Simplify right side
    81,531.55x = 3,539,224,168.25
  5. Step 5: Solve for x
    x = 3,539,224,168.25/81,531.55
  6. Step 6: Final answer
    x = 43,409.26

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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.