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Finding the Fourth Proportional to 67,987.52, 93,812 and 39,296.52

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Solution

The fourth proportional to 67,987.52, 93,812 and 39,296.52 is: 54,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.52 : 93,812 = 39,296.52 : x
  2. Step 2: Convert to fraction form
    67,987.52/93,812 = 39,296.52/x
  3. Step 3: Cross multiply
    67,987.52x = 93,812 × 39,296.52
  4. Step 4: Simplify right side
    67,987.52x = 3,686,485,134.24
  5. Step 5: Solve for x
    x = 3,686,485,134.24/67,987.52
  6. Step 6: Final answer
    x = 54,222.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.