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Finding the Fourth Proportional to 91,874.30, 126,792.81 and 51,043.22

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Solution

The fourth proportional to 91,874.30, 126,792.81 and 51,043.22 is: 70,443.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,874.30 : 126,792.81 = 51,043.22 : x
  2. Step 2: Convert to fraction form
    91,874.30/126,792.81 = 51,043.22/x
  3. Step 3: Cross multiply
    91,874.30x = 126,792.81 × 51,043.22
  4. Step 4: Simplify right side
    91,874.30x = 6,471,913,295.25
  5. Step 5: Solve for x
    x = 6,471,913,295.25/91,874.30
  6. Step 6: Final answer
    x = 70,443.13

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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.