Home / 71,712,361.60-107,568,542.40-66,169,628.80

Finding the Fourth Proportional to 71,712,361.60, 107,568,542.40 and 66,169,628.80

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Solution

The fourth proportional to 71,712,361.60, 107,568,542.40 and 66,169,628.80 is: 99,254,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,712,361.60 : 107,568,542.40 = 66,169,628.80 : x
  2. Step 2: Convert to fraction form
    71,712,361.60/107,568,542.40 = 66,169,628.80/x
  3. Step 3: Cross multiply
    71,712,361.60x = 107,568,542.40 × 66,169,628.80
  4. Step 4: Simplify right side
    71,712,361.60x = 7,117,770,521,165,061
  5. Step 5: Solve for x
    x = 7,117,770,521,165,061/71,712,361.60
  6. Step 6: Final answer
    x = 99,254,443.20

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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.