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Finding the Fourth Proportional to 67,872.57, 101,804.70 and 30,422.58

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Solution

The fourth proportional to 67,872.57, 101,804.70 and 30,422.58 is: 45,632.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,872.57 : 101,804.70 = 30,422.58 : x
  2. Step 2: Convert to fraction form
    67,872.57/101,804.70 = 30,422.58/x
  3. Step 3: Cross multiply
    67,872.57x = 101,804.70 × 30,422.58
  4. Step 4: Simplify right side
    67,872.57x = 3,097,161,630.13
  5. Step 5: Solve for x
    x = 3,097,161,630.13/67,872.57
  6. Step 6: Final answer
    x = 45,632.01

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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.