Home / 76,661.09-114,983.54-20,506.86

Finding the Fourth Proportional to 76,661.09, 114,983.54 and 20,506.86

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Solution

The fourth proportional to 76,661.09, 114,983.54 and 20,506.86 is: 30,758.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,661.09 : 114,983.54 = 20,506.86 : x
  2. Step 2: Convert to fraction form
    76,661.09/114,983.54 = 20,506.86/x
  3. Step 3: Cross multiply
    76,661.09x = 114,983.54 × 20,506.86
  4. Step 4: Simplify right side
    76,661.09x = 2,357,951,254.55
  5. Step 5: Solve for x
    x = 2,357,951,254.55/76,661.09
  6. Step 6: Final answer
    x = 30,758.13

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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.