Home / 68,704.20-102,959.10-42,330.60

Finding the Fourth Proportional to 68,704.20, 102,959.10 and 42,330.60

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Solution

The fourth proportional to 68,704.20, 102,959.10 and 42,330.60 is: 63,436.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,704.20 : 102,959.10 = 42,330.60 : x
  2. Step 2: Convert to fraction form
    68,704.20/102,959.10 = 42,330.60/x
  3. Step 3: Cross multiply
    68,704.20x = 102,959.10 × 42,330.60
  4. Step 4: Simplify right side
    68,704.20x = 4,358,320,478.46
  5. Step 5: Solve for x
    x = 4,358,320,478.46/68,704.20
  6. Step 6: Final answer
    x = 63,436.01

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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.