Home / 72,695,004.60-109,042,506.90-66,317,712.60

Finding the Fourth Proportional to 72,695,004.60, 109,042,506.90 and 66,317,712.60

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Solution

The fourth proportional to 72,695,004.60, 109,042,506.90 and 66,317,712.60 is: 99,476,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,695,004.60 : 109,042,506.90 = 66,317,712.60 : x
  2. Step 2: Convert to fraction form
    72,695,004.60/109,042,506.90 = 66,317,712.60/x
  3. Step 3: Cross multiply
    72,695,004.60x = 109,042,506.90 × 66,317,712.60
  4. Step 4: Simplify right side
    72,695,004.60x = 7,231,449,633,777,717
  5. Step 5: Solve for x
    x = 7,231,449,633,777,717/72,695,004.60
  6. Step 6: Final answer
    x = 99,476,568.90

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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.