Home / 77,918.83-107,531.15-43,928.60

Finding the Fourth Proportional to 77,918.83, 107,531.15 and 43,928.60

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Solution

The fourth proportional to 77,918.83, 107,531.15 and 43,928.60 is: 60,623.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,918.83 : 107,531.15 = 43,928.60 : x
  2. Step 2: Convert to fraction form
    77,918.83/107,531.15 = 43,928.60/x
  3. Step 3: Cross multiply
    77,918.83x = 107,531.15 × 43,928.60
  4. Step 4: Simplify right side
    77,918.83x = 4,723,692,118.59
  5. Step 5: Solve for x
    x = 4,723,692,118.59/77,918.83
  6. Step 6: Final answer
    x = 60,623.24

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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.