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Finding the Fourth Proportional to 45,287.80, 67,904.70 and 27,770.20

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Solution

The fourth proportional to 45,287.80, 67,904.70 and 27,770.20 is: 41,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,287.80 : 67,904.70 = 27,770.20 : x
  2. Step 2: Convert to fraction form
    45,287.80/67,904.70 = 27,770.20/x
  3. Step 3: Cross multiply
    45,287.80x = 67,904.70 × 27,770.20
  4. Step 4: Simplify right side
    45,287.80x = 1,885,727,099.94
  5. Step 5: Solve for x
    x = 1,885,727,099.94/45,287.80
  6. Step 6: Final answer
    x = 41,638.74

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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.