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Finding the Fourth Proportional to 66,165,187.20, 99,106,063.20 and 54,827,779.20

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Solution

The fourth proportional to 66,165,187.20, 99,106,063.20 and 54,827,779.20 is: 82,124,234.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,165,187.20 : 99,106,063.20 = 54,827,779.20 : x
  2. Step 2: Convert to fraction form
    66,165,187.20/99,106,063.20 = 54,827,779.20/x
  3. Step 3: Cross multiply
    66,165,187.20x = 99,106,063.20 × 54,827,779.20
  4. Step 4: Simplify right side
    66,165,187.20x = 5,433,765,350,510,846
  5. Step 5: Solve for x
    x = 5,433,765,350,510,846/66,165,187.20
  6. Step 6: Final answer
    x = 82,124,234.52

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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.