Home / 45,359.12-68,015.36-20,377.76

Finding the Fourth Proportional to 45,359.12, 68,015.36 and 20,377.76

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Solution

The fourth proportional to 45,359.12, 68,015.36 and 20,377.76 is: 30,556.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,359.12 : 68,015.36 = 20,377.76 : x
  2. Step 2: Convert to fraction form
    45,359.12/68,015.36 = 20,377.76/x
  3. Step 3: Cross multiply
    45,359.12x = 68,015.36 × 20,377.76
  4. Step 4: Simplify right side
    45,359.12x = 1,386,000,393.26
  5. Step 5: Solve for x
    x = 1,386,000,393.26/45,359.12
  6. Step 6: Final answer
    x = 30,556.16

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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.