Home / 99,630.47-137,487.31-54,309.34

Finding the Fourth Proportional to 99,630.47, 137,487.31 and 54,309.34

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Solution

The fourth proportional to 99,630.47, 137,487.31 and 54,309.34 is: 74,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,630.47 : 137,487.31 = 54,309.34 : x
  2. Step 2: Convert to fraction form
    99,630.47/137,487.31 = 54,309.34/x
  3. Step 3: Cross multiply
    99,630.47x = 137,487.31 × 54,309.34
  4. Step 4: Simplify right side
    99,630.47x = 7,466,844,327.20
  5. Step 5: Solve for x
    x = 7,466,844,327.20/99,630.47
  6. Step 6: Final answer
    x = 74,945.39

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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.