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Finding the Fourth Proportional to 52,705.64, 79,069.04 and 19,425.87

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Solution

The fourth proportional to 52,705.64, 79,069.04 and 19,425.87 is: 29,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,705.64 : 79,069.04 = 19,425.87 : x
  2. Step 2: Convert to fraction form
    52,705.64/79,069.04 = 19,425.87/x
  3. Step 3: Cross multiply
    52,705.64x = 79,069.04 × 19,425.87
  4. Step 4: Simplify right side
    52,705.64x = 1,535,984,794.94
  5. Step 5: Solve for x
    x = 1,535,984,794.94/52,705.64
  6. Step 6: Final answer
    x = 29,142.71

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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.