Home / 76,377.48-114,553.02-20,218.20

Finding the Fourth Proportional to 76,377.48, 114,553.02 and 20,218.20

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Solution

The fourth proportional to 76,377.48, 114,553.02 and 20,218.20 is: 30,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,377.48 : 114,553.02 = 20,218.20 : x
  2. Step 2: Convert to fraction form
    76,377.48/114,553.02 = 20,218.20/x
  3. Step 3: Cross multiply
    76,377.48x = 114,553.02 × 20,218.20
  4. Step 4: Simplify right side
    76,377.48x = 2,316,055,868.96
  5. Step 5: Solve for x
    x = 2,316,055,868.96/76,377.48
  6. Step 6: Final answer
    x = 30,323.81

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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.