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Finding the Fourth Proportional to 67,374.69, 101,044.77 and 19,978.68

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Solution

The fourth proportional to 67,374.69, 101,044.77 and 19,978.68 is: 29,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,374.69 : 101,044.77 = 19,978.68 : x
  2. Step 2: Convert to fraction form
    67,374.69/101,044.77 = 19,978.68/x
  3. Step 3: Cross multiply
    67,374.69x = 101,044.77 × 19,978.68
  4. Step 4: Simplify right side
    67,374.69x = 2,018,741,125.50
  5. Step 5: Solve for x
    x = 2,018,741,125.50/67,374.69
  6. Step 6: Final answer
    x = 29,962.90

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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.