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Finding the Fourth Proportional to 57,636.38, 86,465.02 and 28,054.20

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Solution

The fourth proportional to 57,636.38, 86,465.02 and 28,054.20 is: 42,086.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,636.38 : 86,465.02 = 28,054.20 : x
  2. Step 2: Convert to fraction form
    57,636.38/86,465.02 = 28,054.20/x
  3. Step 3: Cross multiply
    57,636.38x = 86,465.02 × 28,054.20
  4. Step 4: Simplify right side
    57,636.38x = 2,425,706,964.08
  5. Step 5: Solve for x
    x = 2,425,706,964.08/57,636.38
  6. Step 6: Final answer
    x = 42,086.39

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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.