Home / 68,460.10-102,440.35-40,393.60

Finding the Fourth Proportional to 68,460.10, 102,440.35 and 40,393.60

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Solution

The fourth proportional to 68,460.10, 102,440.35 and 40,393.60 is: 60,443.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,460.10 : 102,440.35 = 40,393.60 : x
  2. Step 2: Convert to fraction form
    68,460.10/102,440.35 = 40,393.60/x
  3. Step 3: Cross multiply
    68,460.10x = 102,440.35 × 40,393.60
  4. Step 4: Simplify right side
    68,460.10x = 4,137,933,807.59
  5. Step 5: Solve for x
    x = 4,137,933,807.59/68,460.10
  6. Step 6: Final answer
    x = 60,443.00

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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.