Home / 71,605.48-98,816.26-39,777.88

Finding the Fourth Proportional to 71,605.48, 98,816.26 and 39,777.88

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Solution

The fourth proportional to 71,605.48, 98,816.26 and 39,777.88 is: 54,893.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,605.48 : 98,816.26 = 39,777.88 : x
  2. Step 2: Convert to fraction form
    71,605.48/98,816.26 = 39,777.88/x
  3. Step 3: Cross multiply
    71,605.48x = 98,816.26 × 39,777.88
  4. Step 4: Simplify right side
    71,605.48x = 3,930,701,332.33
  5. Step 5: Solve for x
    x = 3,930,701,332.33/71,605.48
  6. Step 6: Final answer
    x = 54,893.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.