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Finding the Fourth Proportional to 90,112.84, 124,365 and 51,873.82

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Solution

The fourth proportional to 90,112.84, 124,365 and 51,873.82 is: 71,591.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,112.84 : 124,365 = 51,873.82 : x
  2. Step 2: Convert to fraction form
    90,112.84/124,365 = 51,873.82/x
  3. Step 3: Cross multiply
    90,112.84x = 124,365 × 51,873.82
  4. Step 4: Simplify right side
    90,112.84x = 6,451,287,624.30
  5. Step 5: Solve for x
    x = 6,451,287,624.30/90,112.84
  6. Step 6: Final answer
    x = 71,591.21

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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.