Home / 68,748.24-103,122.40-18,828.76

Finding the Fourth Proportional to 68,748.24, 103,122.40 and 18,828.76

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Solution

The fourth proportional to 68,748.24, 103,122.40 and 18,828.76 is: 28,243.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,748.24 : 103,122.40 = 18,828.76 : x
  2. Step 2: Convert to fraction form
    68,748.24/103,122.40 = 18,828.76/x
  3. Step 3: Cross multiply
    68,748.24x = 103,122.40 × 18,828.76
  4. Step 4: Simplify right side
    68,748.24x = 1,941,666,920.22
  5. Step 5: Solve for x
    x = 1,941,666,920.22/68,748.24
  6. Step 6: Final answer
    x = 28,243.15

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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.