Home / 76,693,708.80-115,105,881.60-31,288,089.60

Finding the Fourth Proportional to 76,693,708.80, 115,105,881.60 and 31,288,089.60

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Solution

The fourth proportional to 76,693,708.80, 115,105,881.60 and 31,288,089.60 is: 46,958,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,693,708.80 : 115,105,881.60 = 31,288,089.60 : x
  2. Step 2: Convert to fraction form
    76,693,708.80/115,105,881.60 = 31,288,089.60/x
  3. Step 3: Cross multiply
    76,693,708.80x = 115,105,881.60 × 31,288,089.60
  4. Step 4: Simplify right side
    76,693,708.80x = 3,601,443,136,987,791.50
  5. Step 5: Solve for x
    x = 3,601,443,136,987,791.50/76,693,708.80
  6. Step 6: Final answer
    x = 46,958,781.80

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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.