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Finding the Fourth Proportional to 83,635.80, 115,364.91 and 49,620.20

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Solution

The fourth proportional to 83,635.80, 115,364.91 and 49,620.20 is: 68,444.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,635.80 : 115,364.91 = 49,620.20 : x
  2. Step 2: Convert to fraction form
    83,635.80/115,364.91 = 49,620.20/x
  3. Step 3: Cross multiply
    83,635.80x = 115,364.91 × 49,620.20
  4. Step 4: Simplify right side
    83,635.80x = 5,724,429,907.18
  5. Step 5: Solve for x
    x = 5,724,429,907.18/83,635.80
  6. Step 6: Final answer
    x = 68,444.73

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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.