Home / 85,072.57-127,620.53-28,897.60

Finding the Fourth Proportional to 85,072.57, 127,620.53 and 28,897.60

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Solution

The fourth proportional to 85,072.57, 127,620.53 and 28,897.60 is: 43,350.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,072.57 : 127,620.53 = 28,897.60 : x
  2. Step 2: Convert to fraction form
    85,072.57/127,620.53 = 28,897.60/x
  3. Step 3: Cross multiply
    85,072.57x = 127,620.53 × 28,897.60
  4. Step 4: Simplify right side
    85,072.57x = 3,687,926,911.84
  5. Step 5: Solve for x
    x = 3,687,926,911.84/85,072.57
  6. Step 6: Final answer
    x = 43,350.37

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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.