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Finding the Fourth Proportional to 78,753.52, 108,669.36 and 50,497.60

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Solution

The fourth proportional to 78,753.52, 108,669.36 and 50,497.60 is: 69,679.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,753.52 : 108,669.36 = 50,497.60 : x
  2. Step 2: Convert to fraction form
    78,753.52/108,669.36 = 50,497.60/x
  3. Step 3: Cross multiply
    78,753.52x = 108,669.36 × 50,497.60
  4. Step 4: Simplify right side
    78,753.52x = 5,487,541,873.54
  5. Step 5: Solve for x
    x = 5,487,541,873.54/78,753.52
  6. Step 6: Final answer
    x = 69,679.96

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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.