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Finding the Fourth Proportional to 90,165.78, 124,414.77 and 51,926.94

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Solution

The fourth proportional to 90,165.78, 124,414.77 and 51,926.94 is: 71,651.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,165.78 : 124,414.77 = 51,926.94 : x
  2. Step 2: Convert to fraction form
    90,165.78/124,414.77 = 51,926.94/x
  3. Step 3: Cross multiply
    90,165.78x = 124,414.77 × 51,926.94
  4. Step 4: Simplify right side
    90,165.78x = 6,460,478,296.90
  5. Step 5: Solve for x
    x = 6,460,478,296.90/90,165.78
  6. Step 6: Final answer
    x = 71,651.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.