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Finding the Fourth Proportional to 68,098.98, 102,148.47 and 21,355.50

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Solution

The fourth proportional to 68,098.98, 102,148.47 and 21,355.50 is: 32,033.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,098.98 : 102,148.47 = 21,355.50 : x
  2. Step 2: Convert to fraction form
    68,098.98/102,148.47 = 21,355.50/x
  3. Step 3: Cross multiply
    68,098.98x = 102,148.47 × 21,355.50
  4. Step 4: Simplify right side
    68,098.98x = 2,181,431,651.09
  5. Step 5: Solve for x
    x = 2,181,431,651.09/68,098.98
  6. Step 6: Final answer
    x = 32,033.25

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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.