Home / 68,877.90-103,377.60-40,762.80

Finding the Fourth Proportional to 68,877.90, 103,377.60 and 40,762.80

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Solution

The fourth proportional to 68,877.90, 103,377.60 and 40,762.80 is: 61,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,877.90 : 103,377.60 = 40,762.80 : x
  2. Step 2: Convert to fraction form
    68,877.90/103,377.60 = 40,762.80/x
  3. Step 3: Cross multiply
    68,877.90x = 103,377.60 × 40,762.80
  4. Step 4: Simplify right side
    68,877.90x = 4,213,960,433.28
  5. Step 5: Solve for x
    x = 4,213,960,433.28/68,877.90
  6. Step 6: Final answer
    x = 61,180.15

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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.