Home / 68,722.02-103,083.10-18,798.42

Finding the Fourth Proportional to 68,722.02, 103,083.10 and 18,798.42

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Solution

The fourth proportional to 68,722.02, 103,083.10 and 18,798.42 is: 28,197.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,722.02 : 103,083.10 = 18,798.42 : x
  2. Step 2: Convert to fraction form
    68,722.02/103,083.10 = 18,798.42/x
  3. Step 3: Cross multiply
    68,722.02x = 103,083.10 × 18,798.42
  4. Step 4: Simplify right side
    68,722.02x = 1,937,799,408.70
  5. Step 5: Solve for x
    x = 1,937,799,408.70/68,722.02
  6. Step 6: Final answer
    x = 28,197.65

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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.