Home / 80,788.57-121,126.64-35,785.49

Finding the Fourth Proportional to 80,788.57, 121,126.64 and 35,785.49

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Solution

The fourth proportional to 80,788.57, 121,126.64 and 35,785.49 is: 53,653.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,788.57 : 121,126.64 = 35,785.49 : x
  2. Step 2: Convert to fraction form
    80,788.57/121,126.64 = 35,785.49/x
  3. Step 3: Cross multiply
    80,788.57x = 121,126.64 × 35,785.49
  4. Step 4: Simplify right side
    80,788.57x = 4,334,576,288.34
  5. Step 5: Solve for x
    x = 4,334,576,288.34/80,788.57
  6. Step 6: Final answer
    x = 53,653.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.