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Finding the Fourth Proportional to 54,306,005.80, 81,459,008.70 and 20,220,298.60

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Solution

The fourth proportional to 54,306,005.80, 81,459,008.70 and 20,220,298.60 is: 30,330,447.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,306,005.80 : 81,459,008.70 = 20,220,298.60 : x
  2. Step 2: Convert to fraction form
    54,306,005.80/81,459,008.70 = 20,220,298.60/x
  3. Step 3: Cross multiply
    54,306,005.80x = 81,459,008.70 × 20,220,298.60
  4. Step 4: Simplify right side
    54,306,005.80x = 1,647,125,479,573,998
  5. Step 5: Solve for x
    x = 1,647,125,479,573,998/54,306,005.80
  6. Step 6: Final answer
    x = 30,330,447.90

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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.