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Finding the Fourth Proportional to 45,007.80, 67,505.78 and 11,730.28

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Solution

The fourth proportional to 45,007.80, 67,505.78 and 11,730.28 is: 17,593.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,007.80 : 67,505.78 = 11,730.28 : x
  2. Step 2: Convert to fraction form
    45,007.80/67,505.78 = 11,730.28/x
  3. Step 3: Cross multiply
    45,007.80x = 67,505.78 × 11,730.28
  4. Step 4: Simplify right side
    45,007.80x = 791,861,701.02
  5. Step 5: Solve for x
    x = 791,861,701.02/45,007.80
  6. Step 6: Final answer
    x = 17,593.88

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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.