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Finding the Fourth Proportional to 53,689.92, 80,534.88 and 18,629.60

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Solution

The fourth proportional to 53,689.92, 80,534.88 and 18,629.60 is: 27,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,689.92 : 80,534.88 = 18,629.60 : x
  2. Step 2: Convert to fraction form
    53,689.92/80,534.88 = 18,629.60/x
  3. Step 3: Cross multiply
    53,689.92x = 80,534.88 × 18,629.60
  4. Step 4: Simplify right side
    53,689.92x = 1,500,332,600.45
  5. Step 5: Solve for x
    x = 1,500,332,600.45/53,689.92
  6. Step 6: Final answer
    x = 27,944.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.