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Finding the Fourth Proportional to 68,379.60, 102,569.40 and 54,555.60

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Solution

The fourth proportional to 68,379.60, 102,569.40 and 54,555.60 is: 81,833.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,379.60 : 102,569.40 = 54,555.60 : x
  2. Step 2: Convert to fraction form
    68,379.60/102,569.40 = 54,555.60/x
  3. Step 3: Cross multiply
    68,379.60x = 102,569.40 × 54,555.60
  4. Step 4: Simplify right side
    68,379.60x = 5,595,735,158.64
  5. Step 5: Solve for x
    x = 5,595,735,158.64/68,379.60
  6. Step 6: Final answer
    x = 81,833.40

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1.5x scale

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.