Home / 77,918.60-107,530.80-43,928.35

Finding the Fourth Proportional to 77,918.60, 107,530.80 and 43,928.35

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Solution

The fourth proportional to 77,918.60, 107,530.80 and 43,928.35 is: 60,622.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,918.60 : 107,530.80 = 43,928.35 : x
  2. Step 2: Convert to fraction form
    77,918.60/107,530.80 = 43,928.35/x
  3. Step 3: Cross multiply
    77,918.60x = 107,530.80 × 43,928.35
  4. Step 4: Simplify right side
    77,918.60x = 4,723,650,618.18
  5. Step 5: Solve for x
    x = 4,723,650,618.18/77,918.60
  6. Step 6: Final answer
    x = 60,622.89

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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.