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Finding the Fourth Proportional to 100,484.52, 138,673.48 and 55,772.52

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Solution

The fourth proportional to 100,484.52, 138,673.48 and 55,772.52 is: 76,968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,484.52 : 138,673.48 = 55,772.52 : x
  2. Step 2: Convert to fraction form
    100,484.52/138,673.48 = 55,772.52/x
  3. Step 3: Cross multiply
    100,484.52x = 138,673.48 × 55,772.52
  4. Step 4: Simplify right side
    100,484.52x = 7,734,169,436.77
  5. Step 5: Solve for x
    x = 7,734,169,436.77/100,484.52
  6. Step 6: Final answer
    x = 76,968.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.