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Finding the Fourth Proportional to 72,453.60, 108,680.40 and 54,957.60

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Solution

The fourth proportional to 72,453.60, 108,680.40 and 54,957.60 is: 82,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,453.60 : 108,680.40 = 54,957.60 : x
  2. Step 2: Convert to fraction form
    72,453.60/108,680.40 = 54,957.60/x
  3. Step 3: Cross multiply
    72,453.60x = 108,680.40 × 54,957.60
  4. Step 4: Simplify right side
    72,453.60x = 5,972,813,951.04
  5. Step 5: Solve for x
    x = 5,972,813,951.04/72,453.60
  6. Step 6: Final answer
    x = 82,436.40

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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.