Home / 81,438,353.40-122,115,539.70-30,294,046.20

Finding the Fourth Proportional to 81,438,353.40, 122,115,539.70 and 30,294,046.20

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Solution

The fourth proportional to 81,438,353.40, 122,115,539.70 and 30,294,046.20 is: 45,425,449.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,438,353.40 : 122,115,539.70 = 30,294,046.20 : x
  2. Step 2: Convert to fraction form
    81,438,353.40/122,115,539.70 = 30,294,046.20/x
  3. Step 3: Cross multiply
    81,438,353.40x = 122,115,539.70 × 30,294,046.20
  4. Step 4: Simplify right side
    81,438,353.40x = 3,699,373,801,409,734
  5. Step 5: Solve for x
    x = 3,699,373,801,409,734/81,438,353.40
  6. Step 6: Final answer
    x = 45,425,449.40

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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.