Home / 99,631.35-137,489.48-54,309.72

Finding the Fourth Proportional to 99,631.35, 137,489.48 and 54,309.72

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Solution

The fourth proportional to 99,631.35, 137,489.48 and 54,309.72 is: 74,946.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,631.35 : 137,489.48 = 54,309.72 : x
  2. Step 2: Convert to fraction form
    99,631.35/137,489.48 = 54,309.72/x
  3. Step 3: Cross multiply
    99,631.35x = 137,489.48 × 54,309.72
  4. Step 4: Simplify right side
    99,631.35x = 7,467,014,890.20
  5. Step 5: Solve for x
    x = 7,467,014,890.20/99,631.35
  6. Step 6: Final answer
    x = 74,946.44

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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.