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Finding the Fourth Proportional to 67,345.80, 101,018.70 and 19,962.60

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Solution

The fourth proportional to 67,345.80, 101,018.70 and 19,962.60 is: 29,943.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,345.80 : 101,018.70 = 19,962.60 : x
  2. Step 2: Convert to fraction form
    67,345.80/101,018.70 = 19,962.60/x
  3. Step 3: Cross multiply
    67,345.80x = 101,018.70 × 19,962.60
  4. Step 4: Simplify right side
    67,345.80x = 2,016,595,900.62
  5. Step 5: Solve for x
    x = 2,016,595,900.62/67,345.80
  6. Step 6: Final answer
    x = 29,943.90

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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.