Home / 56,815.01-78,401.05-31,321.60

Finding the Fourth Proportional to 56,815.01, 78,401.05 and 31,321.60

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Solution

The fourth proportional to 56,815.01, 78,401.05 and 31,321.60 is: 43,221.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,815.01 : 78,401.05 = 31,321.60 : x
  2. Step 2: Convert to fraction form
    56,815.01/78,401.05 = 31,321.60/x
  3. Step 3: Cross multiply
    56,815.01x = 78,401.05 × 31,321.60
  4. Step 4: Simplify right side
    56,815.01x = 2,455,646,097.56
  5. Step 5: Solve for x
    x = 2,455,646,097.56/56,815.01
  6. Step 6: Final answer
    x = 43,221.78

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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.