Home / 45,979.14-68,956.26-12,691.20

Finding the Fourth Proportional to 45,979.14, 68,956.26 and 12,691.20

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Solution

The fourth proportional to 45,979.14, 68,956.26 and 12,691.20 is: 19,033.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,979.14 : 68,956.26 = 12,691.20 : x
  2. Step 2: Convert to fraction form
    45,979.14/68,956.26 = 12,691.20/x
  3. Step 3: Cross multiply
    45,979.14x = 68,956.26 × 12,691.20
  4. Step 4: Simplify right side
    45,979.14x = 875,137,686.91
  5. Step 5: Solve for x
    x = 875,137,686.91/45,979.14
  6. Step 6: Final answer
    x = 19,033.36

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1.5x scale

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.