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Finding the Fourth Proportional to 67,911.84, 101,852.64 and 28,513.44

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Solution

The fourth proportional to 67,911.84, 101,852.64 and 28,513.44 is: 42,763.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,911.84 : 101,852.64 = 28,513.44 : x
  2. Step 2: Convert to fraction form
    67,911.84/101,852.64 = 28,513.44/x
  3. Step 3: Cross multiply
    67,911.84x = 101,852.64 × 28,513.44
  4. Step 4: Simplify right side
    67,911.84x = 2,904,169,139.48
  5. Step 5: Solve for x
    x = 2,904,169,139.48/67,911.84
  6. Step 6: Final answer
    x = 42,763.81

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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.