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Finding the Fourth Proportional to 62,359, 93,539.31 and 20,806

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Solution

The fourth proportional to 62,359, 93,539.31 and 20,806 is: 31,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,359 : 93,539.31 = 20,806 : x
  2. Step 2: Convert to fraction form
    62,359/93,539.31 = 20,806/x
  3. Step 3: Cross multiply
    62,359x = 93,539.31 × 20,806
  4. Step 4: Simplify right side
    62,359x = 1,946,178,883.86
  5. Step 5: Solve for x
    x = 1,946,178,883.86/62,359
  6. Step 6: Final answer
    x = 31,209.27

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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.