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Finding the Fourth Proportional to 80,730.60, 121,101.96 and 21,564.96

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Solution

The fourth proportional to 80,730.60, 121,101.96 and 21,564.96 is: 32,349.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,730.60 : 121,101.96 = 21,564.96 : x
  2. Step 2: Convert to fraction form
    80,730.60/121,101.96 = 21,564.96/x
  3. Step 3: Cross multiply
    80,730.60x = 121,101.96 × 21,564.96
  4. Step 4: Simplify right side
    80,730.60x = 2,611,558,923.32
  5. Step 5: Solve for x
    x = 2,611,558,923.32/80,730.60
  6. Step 6: Final answer
    x = 32,349.06

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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.