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Finding the Fourth Proportional to 67,987.92, 101,946.87 and 30,515.87

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Solution

The fourth proportional to 67,987.92, 101,946.87 and 30,515.87 is: 45,758.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.92 : 101,946.87 = 30,515.87 : x
  2. Step 2: Convert to fraction form
    67,987.92/101,946.87 = 30,515.87/x
  3. Step 3: Cross multiply
    67,987.92x = 101,946.87 × 30,515.87
  4. Step 4: Simplify right side
    67,987.92x = 3,110,997,686.69
  5. Step 5: Solve for x
    x = 3,110,997,686.69/67,987.92
  6. Step 6: Final answer
    x = 45,758.09

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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.