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Finding the Fourth Proportional to 73,491.60, 109,945.80 and 63,739.20

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Solution

The fourth proportional to 73,491.60, 109,945.80 and 63,739.20 is: 95,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,491.60 : 109,945.80 = 63,739.20 : x
  2. Step 2: Convert to fraction form
    73,491.60/109,945.80 = 63,739.20/x
  3. Step 3: Cross multiply
    73,491.60x = 109,945.80 × 63,739.20
  4. Step 4: Simplify right side
    73,491.60x = 7,007,857,335.36
  5. Step 5: Solve for x
    x = 7,007,857,335.36/73,491.60
  6. Step 6: Final answer
    x = 95,355.90

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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.