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Finding the Fourth Proportional to 67,712.87, 101,578.76 and 28,260.95

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Solution

The fourth proportional to 67,712.87, 101,578.76 and 28,260.95 is: 42,395.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,712.87 : 101,578.76 = 28,260.95 : x
  2. Step 2: Convert to fraction form
    67,712.87/101,578.76 = 28,260.95/x
  3. Step 3: Cross multiply
    67,712.87x = 101,578.76 × 28,260.95
  4. Step 4: Simplify right side
    67,712.87x = 2,870,712,476.04
  5. Step 5: Solve for x
    x = 2,870,712,476.04/67,712.87
  6. Step 6: Final answer
    x = 42,395.37

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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.