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Finding the Fourth Proportional to 80,889.60, 111,629.76 and 45,077.76

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Solution

The fourth proportional to 80,889.60, 111,629.76 and 45,077.76 is: 62,208.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,889.60 : 111,629.76 = 45,077.76 : x
  2. Step 2: Convert to fraction form
    80,889.60/111,629.76 = 45,077.76/x
  3. Step 3: Cross multiply
    80,889.60x = 111,629.76 × 45,077.76
  4. Step 4: Simplify right side
    80,889.60x = 5,032,019,530.14
  5. Step 5: Solve for x
    x = 5,032,019,530.14/80,889.60
  6. Step 6: Final answer
    x = 62,208.49

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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.