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Finding the Fourth Proportional to 62,268, 93,402.81 and 20,715

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Solution

The fourth proportional to 62,268, 93,402.81 and 20,715 is: 31,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,268 : 93,402.81 = 20,715 : x
  2. Step 2: Convert to fraction form
    62,268/93,402.81 = 20,715/x
  3. Step 3: Cross multiply
    62,268x = 93,402.81 × 20,715
  4. Step 4: Simplify right side
    62,268x = 1,934,839,209.15
  5. Step 5: Solve for x
    x = 1,934,839,209.15/62,268
  6. Step 6: Final answer
    x = 31,072.77

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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.