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Finding the Fourth Proportional to 61,781.50, 92,673.06 and 20,228.50

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Solution

The fourth proportional to 61,781.50, 92,673.06 and 20,228.50 is: 30,343.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,781.50 : 92,673.06 = 20,228.50 : x
  2. Step 2: Convert to fraction form
    61,781.50/92,673.06 = 20,228.50/x
  3. Step 3: Cross multiply
    61,781.50x = 92,673.06 × 20,228.50
  4. Step 4: Simplify right side
    61,781.50x = 1,874,636,994.21
  5. Step 5: Solve for x
    x = 1,874,636,994.21/61,781.50
  6. Step 6: Final answer
    x = 30,343.02

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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.