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Finding the Fourth Proportional to 80,649,166.80, 120,974,187.60 and 20,064,892.80

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Solution

The fourth proportional to 80,649,166.80, 120,974,187.60 and 20,064,892.80 is: 30,097,448.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,649,166.80 : 120,974,187.60 = 20,064,892.80 : x
  2. Step 2: Convert to fraction form
    80,649,166.80/120,974,187.60 = 20,064,892.80/x
  3. Step 3: Cross multiply
    80,649,166.80x = 120,974,187.60 × 20,064,892.80
  4. Step 4: Simplify right side
    80,649,166.80x = 2,427,334,105,761,089.50
  5. Step 5: Solve for x
    x = 2,427,334,105,761,089.50/80,649,166.80
  6. Step 6: Final answer
    x = 30,097,448.02

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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.