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Finding the Fourth Proportional to 45,368.64, 68,008.61 and 20,414.97

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Solution

The fourth proportional to 45,368.64, 68,008.61 and 20,414.97 is: 30,602.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,368.64 : 68,008.61 = 20,414.97 : x
  2. Step 2: Convert to fraction form
    45,368.64/68,008.61 = 20,414.97/x
  3. Step 3: Cross multiply
    45,368.64x = 68,008.61 × 20,414.97
  4. Step 4: Simplify right side
    45,368.64x = 1,388,393,630.82
  5. Step 5: Solve for x
    x = 1,388,393,630.82/45,368.64
  6. Step 6: Final answer
    x = 30,602.50

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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.