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Finding the Fourth Proportional to 67,392.32, 101,071.17 and 19,996.20

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Solution

The fourth proportional to 67,392.32, 101,071.17 and 19,996.20 is: 29,989.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,392.32 : 101,071.17 = 19,996.20 : x
  2. Step 2: Convert to fraction form
    67,392.32/101,071.17 = 19,996.20/x
  3. Step 3: Cross multiply
    67,392.32x = 101,071.17 × 19,996.20
  4. Step 4: Simplify right side
    67,392.32x = 2,021,039,188.38
  5. Step 5: Solve for x
    x = 2,021,039,188.38/67,392.32
  6. Step 6: Final answer
    x = 29,989.16

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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.