Home / 72,695,008.60-109,042,512.90-66,317,716.60

Finding the Fourth Proportional to 72,695,008.60, 109,042,512.90 and 66,317,716.60

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Solution

The fourth proportional to 72,695,008.60, 109,042,512.90 and 66,317,716.60 is: 99,476,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,695,008.60 : 109,042,512.90 = 66,317,716.60 : x
  2. Step 2: Convert to fraction form
    72,695,008.60/109,042,512.90 = 66,317,716.60/x
  3. Step 3: Cross multiply
    72,695,008.60x = 109,042,512.90 × 66,317,716.60
  4. Step 4: Simplify right side
    72,695,008.60x = 7,231,450,467,854,045
  5. Step 5: Solve for x
    x = 7,231,450,467,854,045/72,695,008.60
  6. Step 6: Final answer
    x = 99,476,574.90

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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.