Home / 80,829.60-121,244.40-45,837.60

Finding the Fourth Proportional to 80,829.60, 121,244.40 and 45,837.60

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Solution

The fourth proportional to 80,829.60, 121,244.40 and 45,837.60 is: 68,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,829.60 : 121,244.40 = 45,837.60 : x
  2. Step 2: Convert to fraction form
    80,829.60/121,244.40 = 45,837.60/x
  3. Step 3: Cross multiply
    80,829.60x = 121,244.40 × 45,837.60
  4. Step 4: Simplify right side
    80,829.60x = 5,557,552,309.44
  5. Step 5: Solve for x
    x = 5,557,552,309.44/80,829.60
  6. Step 6: Final answer
    x = 68,756.40

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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.