Home / 61,678.13-85,131.77-40,221.36

Finding the Fourth Proportional to 61,678.13, 85,131.77 and 40,221.36

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Solution

The fourth proportional to 61,678.13, 85,131.77 and 40,221.36 is: 55,515.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,678.13 : 85,131.77 = 40,221.36 : x
  2. Step 2: Convert to fraction form
    61,678.13/85,131.77 = 40,221.36/x
  3. Step 3: Cross multiply
    61,678.13x = 85,131.77 × 40,221.36
  4. Step 4: Simplify right side
    61,678.13x = 3,424,115,367.50
  5. Step 5: Solve for x
    x = 3,424,115,367.50/61,678.13
  6. Step 6: Final answer
    x = 55,515.88

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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.