Home / 91,721.60-137,452.80-56,556.80

Finding the Fourth Proportional to 91,721.60, 137,452.80 and 56,556.80

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Solution

The fourth proportional to 91,721.60, 137,452.80 and 56,556.80 is: 84,755.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,721.60 : 137,452.80 = 56,556.80 : x
  2. Step 2: Convert to fraction form
    91,721.60/137,452.80 = 56,556.80/x
  3. Step 3: Cross multiply
    91,721.60x = 137,452.80 × 56,556.80
  4. Step 4: Simplify right side
    91,721.60x = 7,773,890,519.04
  5. Step 5: Solve for x
    x = 7,773,890,519.04/91,721.60
  6. Step 6: Final answer
    x = 84,755.29

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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.