Home / 90,664.54-135,881.65-51,243.82

Finding the Fourth Proportional to 90,664.54, 135,881.65 and 51,243.82

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Solution

The fourth proportional to 90,664.54, 135,881.65 and 51,243.82 is: 76,800.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,664.54 : 135,881.65 = 51,243.82 : x
  2. Step 2: Convert to fraction form
    90,664.54/135,881.65 = 51,243.82/x
  3. Step 3: Cross multiply
    90,664.54x = 135,881.65 × 51,243.82
  4. Step 4: Simplify right side
    90,664.54x = 6,963,094,813.90
  5. Step 5: Solve for x
    x = 6,963,094,813.90/90,664.54
  6. Step 6: Final answer
    x = 76,800.64

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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.