Home / 99,961.57-137,941.64-54,630.82

Finding the Fourth Proportional to 99,961.57, 137,941.64 and 54,630.82

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Solution

The fourth proportional to 99,961.57, 137,941.64 and 54,630.82 is: 75,387.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,961.57 : 137,941.64 = 54,630.82 : x
  2. Step 2: Convert to fraction form
    99,961.57/137,941.64 = 54,630.82/x
  3. Step 3: Cross multiply
    99,961.57x = 137,941.64 × 54,630.82
  4. Step 4: Simplify right side
    99,961.57x = 7,535,864,215.64
  5. Step 5: Solve for x
    x = 7,535,864,215.64/99,961.57
  6. Step 6: Final answer
    x = 75,387.62

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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.