Home / 85,269.20-127,940.64-45,780.20

Finding the Fourth Proportional to 85,269.20, 127,940.64 and 45,780.20

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Solution

The fourth proportional to 85,269.20, 127,940.64 and 45,780.20 is: 68,690.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,269.20 : 127,940.64 = 45,780.20 : x
  2. Step 2: Convert to fraction form
    85,269.20/127,940.64 = 45,780.20/x
  3. Step 3: Cross multiply
    85,269.20x = 127,940.64 × 45,780.20
  4. Step 4: Simplify right side
    85,269.20x = 5,857,148,087.33
  5. Step 5: Solve for x
    x = 5,857,148,087.33/85,269.20
  6. Step 6: Final answer
    x = 68,690.08

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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.