Home / 76,660.77-114,983.07-20,506.55

Finding the Fourth Proportional to 76,660.77, 114,983.07 and 20,506.55

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Solution

The fourth proportional to 76,660.77, 114,983.07 and 20,506.55 is: 30,757.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,660.77 : 114,983.07 = 20,506.55 : x
  2. Step 2: Convert to fraction form
    76,660.77/114,983.07 = 20,506.55/x
  3. Step 3: Cross multiply
    76,660.77x = 114,983.07 × 20,506.55
  4. Step 4: Simplify right side
    76,660.77x = 2,357,905,637.89
  5. Step 5: Solve for x
    x = 2,357,905,637.89/76,660.77
  6. Step 6: Final answer
    x = 30,757.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.