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Finding the Fourth Proportional to 80,706.80, 111,383.98 and 55,204.76

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Solution

The fourth proportional to 80,706.80, 111,383.98 and 55,204.76 is: 76,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,706.80 : 111,383.98 = 55,204.76 : x
  2. Step 2: Convert to fraction form
    80,706.80/111,383.98 = 55,204.76/x
  3. Step 3: Cross multiply
    80,706.80x = 111,383.98 × 55,204.76
  4. Step 4: Simplify right side
    80,706.80x = 6,148,925,883.74
  5. Step 5: Solve for x
    x = 6,148,925,883.74/80,706.80
  6. Step 6: Final answer
    x = 76,188.45

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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.