Home / 67,785.30-101,690.10-28,346.40

Finding the Fourth Proportional to 67,785.30, 101,690.10 and 28,346.40

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Solution

The fourth proportional to 67,785.30, 101,690.10 and 28,346.40 is: 42,524.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,785.30 : 101,690.10 = 28,346.40 : x
  2. Step 2: Convert to fraction form
    67,785.30/101,690.10 = 28,346.40/x
  3. Step 3: Cross multiply
    67,785.30x = 101,690.10 × 28,346.40
  4. Step 4: Simplify right side
    67,785.30x = 2,882,548,250.64
  5. Step 5: Solve for x
    x = 2,882,548,250.64/67,785.30
  6. Step 6: Final answer
    x = 42,524.68

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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.