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Finding the Fourth Proportional to 61,637.60, 92,436 and 20,074.88

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Solution

The fourth proportional to 61,637.60, 92,436 and 20,074.88 is: 30,105.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,637.60 : 92,436 = 20,074.88 : x
  2. Step 2: Convert to fraction form
    61,637.60/92,436 = 20,074.88/x
  3. Step 3: Cross multiply
    61,637.60x = 92,436 × 20,074.88
  4. Step 4: Simplify right side
    61,637.60x = 1,855,641,607.68
  5. Step 5: Solve for x
    x = 1,855,641,607.68/61,637.60
  6. Step 6: Final answer
    x = 30,105.68

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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.