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Finding the Fourth Proportional to 91,582.80, 126,380.52 and 51,295.92

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Solution

The fourth proportional to 91,582.80, 126,380.52 and 51,295.92 is: 70,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,582.80 : 126,380.52 = 51,295.92 : x
  2. Step 2: Convert to fraction form
    91,582.80/126,380.52 = 51,295.92/x
  3. Step 3: Cross multiply
    91,582.80x = 126,380.52 × 51,295.92
  4. Step 4: Simplify right side
    91,582.80x = 6,482,805,043.48
  5. Step 5: Solve for x
    x = 6,482,805,043.48/91,582.80
  6. Step 6: Final answer
    x = 70,786.27

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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.