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Finding the Fourth Proportional to 64,951.20, 97,426.80 and 54,453.60

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Solution

The fourth proportional to 64,951.20, 97,426.80 and 54,453.60 is: 81,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,951.20 : 97,426.80 = 54,453.60 : x
  2. Step 2: Convert to fraction form
    64,951.20/97,426.80 = 54,453.60/x
  3. Step 3: Cross multiply
    64,951.20x = 97,426.80 × 54,453.60
  4. Step 4: Simplify right side
    64,951.20x = 5,305,239,996.48
  5. Step 5: Solve for x
    x = 5,305,239,996.48/64,951.20
  6. Step 6: Final answer
    x = 81,680.40

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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.