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Finding the Fourth Proportional to 68,432.20, 102,648.30 and 56,912.20

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Solution

The fourth proportional to 68,432.20, 102,648.30 and 56,912.20 is: 85,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,432.20 : 102,648.30 = 56,912.20 : x
  2. Step 2: Convert to fraction form
    68,432.20/102,648.30 = 56,912.20/x
  3. Step 3: Cross multiply
    68,432.20x = 102,648.30 × 56,912.20
  4. Step 4: Simplify right side
    68,432.20x = 5,841,940,579.26
  5. Step 5: Solve for x
    x = 5,841,940,579.26/68,432.20
  6. Step 6: Final answer
    x = 85,368.30

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1.5x scale

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.