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Finding the Fourth Proportional to 99,630.59, 137,488.44 and 54,308.97

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Solution

The fourth proportional to 99,630.59, 137,488.44 and 54,308.97 is: 74,945.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,630.59 : 137,488.44 = 54,308.97 : x
  2. Step 2: Convert to fraction form
    99,630.59/137,488.44 = 54,308.97/x
  3. Step 3: Cross multiply
    99,630.59x = 137,488.44 × 54,308.97
  4. Step 4: Simplify right side
    99,630.59x = 7,466,855,563.31
  5. Step 5: Solve for x
    x = 7,466,855,563.31/99,630.59
  6. Step 6: Final answer
    x = 74,945.41

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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.