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Finding the Fourth Proportional to 67,400.57, 101,097.21 and 20,653.58

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Solution

The fourth proportional to 67,400.57, 101,097.21 and 20,653.58 is: 30,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,400.57 : 101,097.21 = 20,653.58 : x
  2. Step 2: Convert to fraction form
    67,400.57/101,097.21 = 20,653.58/x
  3. Step 3: Cross multiply
    67,400.57x = 101,097.21 × 20,653.58
  4. Step 4: Simplify right side
    67,400.57x = 2,088,019,314.51
  5. Step 5: Solve for x
    x = 2,088,019,314.51/67,400.57
  6. Step 6: Final answer
    x = 30,979.25

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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.