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Finding the Fourth Proportional to 55,775.66, 83,663.66 and 39,209.81

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Solution

The fourth proportional to 55,775.66, 83,663.66 and 39,209.81 is: 58,814.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,775.66 : 83,663.66 = 39,209.81 : x
  2. Step 2: Convert to fraction form
    55,775.66/83,663.66 = 39,209.81/x
  3. Step 3: Cross multiply
    55,775.66x = 83,663.66 × 39,209.81
  4. Step 4: Simplify right side
    55,775.66x = 3,280,436,519.69
  5. Step 5: Solve for x
    x = 3,280,436,519.69/55,775.66
  6. Step 6: Final answer
    x = 58,814.84

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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.