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Finding the Fourth Proportional to 55,209.60, 76,204.80 and 49,766.40

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Solution

The fourth proportional to 55,209.60, 76,204.80 and 49,766.40 is: 68,691.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,209.60 : 76,204.80 = 49,766.40 : x
  2. Step 2: Convert to fraction form
    55,209.60/76,204.80 = 49,766.40/x
  3. Step 3: Cross multiply
    55,209.60x = 76,204.80 × 49,766.40
  4. Step 4: Simplify right side
    55,209.60x = 3,792,438,558.72
  5. Step 5: Solve for x
    x = 3,792,438,558.72/55,209.60
  6. Step 6: Final answer
    x = 68,691.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.