Home / 99,761.61-137,666.73-54,438.48

Finding the Fourth Proportional to 99,761.61, 137,666.73 and 54,438.48

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Solution

The fourth proportional to 99,761.61, 137,666.73 and 54,438.48 is: 75,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,761.61 : 137,666.73 = 54,438.48 : x
  2. Step 2: Convert to fraction form
    99,761.61/137,666.73 = 54,438.48/x
  3. Step 3: Cross multiply
    99,761.61x = 137,666.73 × 54,438.48
  4. Step 4: Simplify right side
    99,761.61x = 7,494,367,527.77
  5. Step 5: Solve for x
    x = 7,494,367,527.77/99,761.61
  6. Step 6: Final answer
    x = 75,122.76

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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.