Home / 68,780.24-103,029.57-40,615.32

Finding the Fourth Proportional to 68,780.24, 103,029.57 and 40,615.32

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Solution

The fourth proportional to 68,780.24, 103,029.57 and 40,615.32 is: 60,839.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,780.24 : 103,029.57 = 40,615.32 : x
  2. Step 2: Convert to fraction form
    68,780.24/103,029.57 = 40,615.32/x
  3. Step 3: Cross multiply
    68,780.24x = 103,029.57 × 40,615.32
  4. Step 4: Simplify right side
    68,780.24x = 4,184,579,341.37
  5. Step 5: Solve for x
    x = 4,184,579,341.37/68,780.24
  6. Step 6: Final answer
    x = 60,839.85

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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.