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Finding the Fourth Proportional to 91,360.48, 126,078.40 and 51,076.48

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Solution

The fourth proportional to 91,360.48, 126,078.40 and 51,076.48 is: 70,486.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,360.48 : 126,078.40 = 51,076.48 : x
  2. Step 2: Convert to fraction form
    91,360.48/126,078.40 = 51,076.48/x
  3. Step 3: Cross multiply
    91,360.48x = 126,078.40 × 51,076.48
  4. Step 4: Simplify right side
    91,360.48x = 6,439,640,876.03
  5. Step 5: Solve for x
    x = 6,439,640,876.03/91,360.48
  6. Step 6: Final answer
    x = 70,486.07

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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.