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Finding the Fourth Proportional to 71,673.80, 98,764.14 and 55,442.54

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Solution

The fourth proportional to 71,673.80, 98,764.14 and 55,442.54 is: 76,398.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,673.80 : 98,764.14 = 55,442.54 : x
  2. Step 2: Convert to fraction form
    71,673.80/98,764.14 = 55,442.54/x
  3. Step 3: Cross multiply
    71,673.80x = 98,764.14 × 55,442.54
  4. Step 4: Simplify right side
    71,673.80x = 5,475,734,782.52
  5. Step 5: Solve for x
    x = 5,475,734,782.52/71,673.80
  6. Step 6: Final answer
    x = 76,398.00

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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.