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Finding the Fourth Proportional to 67,875.68, 101,853.21 and 28,429.49

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Solution

The fourth proportional to 67,875.68, 101,853.21 and 28,429.49 is: 42,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,875.68 : 101,853.21 = 28,429.49 : x
  2. Step 2: Convert to fraction form
    67,875.68/101,853.21 = 28,429.49/x
  3. Step 3: Cross multiply
    67,875.68x = 101,853.21 × 28,429.49
  4. Step 4: Simplify right side
    67,875.68x = 2,895,634,305.90
  5. Step 5: Solve for x
    x = 2,895,634,305.90/67,875.68
  6. Step 6: Final answer
    x = 42,660.85

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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.