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Finding the Fourth Proportional to 55,155.69, 82,752.98 and 20,098.89

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Solution

The fourth proportional to 55,155.69, 82,752.98 and 20,098.89 is: 30,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,155.69 : 82,752.98 = 20,098.89 : x
  2. Step 2: Convert to fraction form
    55,155.69/82,752.98 = 20,098.89/x
  3. Step 3: Cross multiply
    55,155.69x = 82,752.98 × 20,098.89
  4. Step 4: Simplify right side
    55,155.69x = 1,663,242,941.70
  5. Step 5: Solve for x
    x = 1,663,242,941.70/55,155.69
  6. Step 6: Final answer
    x = 30,155.42

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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.