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Finding the Fourth Proportional to 78,753.87, 108,661.10 and 50,497.83

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Solution

The fourth proportional to 78,753.87, 108,661.10 and 50,497.83 is: 69,674.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,753.87 : 108,661.10 = 50,497.83 : x
  2. Step 2: Convert to fraction form
    78,753.87/108,661.10 = 50,497.83/x
  3. Step 3: Cross multiply
    78,753.87x = 108,661.10 × 50,497.83
  4. Step 4: Simplify right side
    78,753.87x = 5,487,149,502.92
  5. Step 5: Solve for x
    x = 5,487,149,502.92/78,753.87
  6. Step 6: Final answer
    x = 69,674.66

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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.