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Finding the Fourth Proportional to 67,406.58, 101,106.21 and 20,659.58

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Solution

The fourth proportional to 67,406.58, 101,106.21 and 20,659.58 is: 30,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,406.58 : 101,106.21 = 20,659.58 : x
  2. Step 2: Convert to fraction form
    67,406.58/101,106.21 = 20,659.58/x
  3. Step 3: Cross multiply
    67,406.58x = 101,106.21 × 20,659.58
  4. Step 4: Simplify right side
    67,406.58x = 2,088,811,833.99
  5. Step 5: Solve for x
    x = 2,088,811,833.99/67,406.58
  6. Step 6: Final answer
    x = 30,988.25

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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.