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Finding the Fourth Proportional to 67,987.36, 101,946.03 and 30,515.31

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Solution

The fourth proportional to 67,987.36, 101,946.03 and 30,515.31 is: 45,757.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.36 : 101,946.03 = 30,515.31 : x
  2. Step 2: Convert to fraction form
    67,987.36/101,946.03 = 30,515.31/x
  3. Step 3: Cross multiply
    67,987.36x = 101,946.03 × 30,515.31
  4. Step 4: Simplify right side
    67,987.36x = 3,110,914,594.29
  5. Step 5: Solve for x
    x = 3,110,914,594.29/67,987.36
  6. Step 6: Final answer
    x = 45,757.25

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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.