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Finding the Fourth Proportional to 55,488, 83,240.28 and 20,424.96

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Solution

The fourth proportional to 55,488, 83,240.28 and 20,424.96 is: 30,640.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,488 : 83,240.28 = 20,424.96 : x
  2. Step 2: Convert to fraction form
    55,488/83,240.28 = 20,424.96/x
  3. Step 3: Cross multiply
    55,488x = 83,240.28 × 20,424.96
  4. Step 4: Simplify right side
    55,488x = 1,700,179,389.39
  5. Step 5: Solve for x
    x = 1,700,179,389.39/55,488
  6. Step 6: Final answer
    x = 30,640.49

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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.