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Finding the Fourth Proportional to 68,015.70, 102,023.55 and 21,282.90

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Solution

The fourth proportional to 68,015.70, 102,023.55 and 21,282.90 is: 31,924.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,015.70 : 102,023.55 = 21,282.90 : x
  2. Step 2: Convert to fraction form
    68,015.70/102,023.55 = 21,282.90/x
  3. Step 3: Cross multiply
    68,015.70x = 102,023.55 × 21,282.90
  4. Step 4: Simplify right side
    68,015.70x = 2,171,357,012.30
  5. Step 5: Solve for x
    x = 2,171,357,012.30/68,015.70
  6. Step 6: Final answer
    x = 31,924.35

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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.