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Finding the Fourth Proportional to 67,686.76, 101,454.62 and 28,230.76

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Solution

The fourth proportional to 67,686.76, 101,454.62 and 28,230.76 is: 42,314.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,686.76 : 101,454.62 = 28,230.76 : x
  2. Step 2: Convert to fraction form
    67,686.76/101,454.62 = 28,230.76/x
  3. Step 3: Cross multiply
    67,686.76x = 101,454.62 × 28,230.76
  4. Step 4: Simplify right side
    67,686.76x = 2,864,141,028.11
  5. Step 5: Solve for x
    x = 2,864,141,028.11/67,686.76
  6. Step 6: Final answer
    x = 42,314.64

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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.