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Finding the Fourth Proportional to 45,813.20, 68,719.80 and 35,445.20

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Solution

The fourth proportional to 45,813.20, 68,719.80 and 35,445.20 is: 53,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,813.20 : 68,719.80 = 35,445.20 : x
  2. Step 2: Convert to fraction form
    45,813.20/68,719.80 = 35,445.20/x
  3. Step 3: Cross multiply
    45,813.20x = 68,719.80 × 35,445.20
  4. Step 4: Simplify right side
    45,813.20x = 2,435,787,054.96
  5. Step 5: Solve for x
    x = 2,435,787,054.96/45,813.20
  6. Step 6: Final answer
    x = 53,167.80

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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.