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Finding the Fourth Proportional to 73,405.60, 109,816.80 and 63,653.20

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Solution

The fourth proportional to 73,405.60, 109,816.80 and 63,653.20 is: 95,226.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,405.60 : 109,816.80 = 63,653.20 : x
  2. Step 2: Convert to fraction form
    73,405.60/109,816.80 = 63,653.20/x
  3. Step 3: Cross multiply
    73,405.60x = 109,816.80 × 63,653.20
  4. Step 4: Simplify right side
    73,405.60x = 6,990,190,733.76
  5. Step 5: Solve for x
    x = 6,990,190,733.76/73,405.60
  6. Step 6: Final answer
    x = 95,226.94

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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.