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Finding the Fourth Proportional to 68,018.60, 102,038.46 and 34,720.65

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Solution

The fourth proportional to 68,018.60, 102,038.46 and 34,720.65 is: 52,086.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,018.60 : 102,038.46 = 34,720.65 : x
  2. Step 2: Convert to fraction form
    68,018.60/102,038.46 = 34,720.65/x
  3. Step 3: Cross multiply
    68,018.60x = 102,038.46 × 34,720.65
  4. Step 4: Simplify right side
    68,018.60x = 3,542,841,656.20
  5. Step 5: Solve for x
    x = 3,542,841,656.20/68,018.60
  6. Step 6: Final answer
    x = 52,086.37

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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.