Home / 67,920.28-101,797.79-28,431.16

Finding the Fourth Proportional to 67,920.28, 101,797.79 and 28,431.16

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Solution

The fourth proportional to 67,920.28, 101,797.79 and 28,431.16 is: 42,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,920.28 : 101,797.79 = 28,431.16 : x
  2. Step 2: Convert to fraction form
    67,920.28/101,797.79 = 28,431.16/x
  3. Step 3: Cross multiply
    67,920.28x = 101,797.79 × 28,431.16
  4. Step 4: Simplify right side
    67,920.28x = 2,894,228,858.49
  5. Step 5: Solve for x
    x = 2,894,228,858.49/67,920.28
  6. Step 6: Final answer
    x = 42,612.15

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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.