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Finding the Fourth Proportional to 91,215.98, 125,876.84 and 50,930.42

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Solution

The fourth proportional to 91,215.98, 125,876.84 and 50,930.42 is: 70,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,215.98 : 125,876.84 = 50,930.42 : x
  2. Step 2: Convert to fraction form
    91,215.98/125,876.84 = 50,930.42/x
  3. Step 3: Cross multiply
    91,215.98x = 125,876.84 × 50,930.42
  4. Step 4: Simplify right side
    91,215.98x = 6,410,960,329.47
  5. Step 5: Solve for x
    x = 6,410,960,329.47/91,215.98
  6. Step 6: Final answer
    x = 70,283.30

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1.5x scale

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.