Home / 68,688.06-103,015.90-18,756.28

Finding the Fourth Proportional to 68,688.06, 103,015.90 and 18,756.28

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Solution

The fourth proportional to 68,688.06, 103,015.90 and 18,756.28 is: 28,130.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,688.06 : 103,015.90 = 18,756.28 : x
  2. Step 2: Convert to fraction form
    68,688.06/103,015.90 = 18,756.28/x
  3. Step 3: Cross multiply
    68,688.06x = 103,015.90 × 18,756.28
  4. Step 4: Simplify right side
    68,688.06x = 1,932,195,064.85
  5. Step 5: Solve for x
    x = 1,932,195,064.85/68,688.06
  6. Step 6: Final answer
    x = 28,130.00

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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.