Home / 81,536.16-122,291.82-28,938

Finding the Fourth Proportional to 81,536.16, 122,291.82 and 28,938

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Solution

The fourth proportional to 81,536.16, 122,291.82 and 28,938 is: 43,402.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,536.16 : 122,291.82 = 28,938 : x
  2. Step 2: Convert to fraction form
    81,536.16/122,291.82 = 28,938/x
  3. Step 3: Cross multiply
    81,536.16x = 122,291.82 × 28,938
  4. Step 4: Simplify right side
    81,536.16x = 3,538,880,687.16
  5. Step 5: Solve for x
    x = 3,538,880,687.16/81,536.16
  6. Step 6: Final answer
    x = 43,402.59

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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.