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Finding the Fourth Proportional to 32,339,905.20, 48,509,857.80 and 20,860,779.60

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Solution

The fourth proportional to 32,339,905.20, 48,509,857.80 and 20,860,779.60 is: 31,291,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,339,905.20 : 48,509,857.80 = 20,860,779.60 : x
  2. Step 2: Convert to fraction form
    32,339,905.20/48,509,857.80 = 20,860,779.60/x
  3. Step 3: Cross multiply
    32,339,905.20x = 48,509,857.80 × 20,860,779.60
  4. Step 4: Simplify right side
    32,339,905.20x = 1,011,953,451,993,140.88
  5. Step 5: Solve for x
    x = 1,011,953,451,993,140.88/32,339,905.20
  6. Step 6: Final answer
    x = 31,291,169.40

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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.