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Finding the Fourth Proportional to 30,057.91, 45,102.59 and 12,301.75

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Solution

The fourth proportional to 30,057.91, 45,102.59 and 12,301.75 is: 18,459.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,057.91 : 45,102.59 = 12,301.75 : x
  2. Step 2: Convert to fraction form
    30,057.91/45,102.59 = 12,301.75/x
  3. Step 3: Cross multiply
    30,057.91x = 45,102.59 × 12,301.75
  4. Step 4: Simplify right side
    30,057.91x = 554,840,786.53
  5. Step 5: Solve for x
    x = 554,840,786.53/30,057.91
  6. Step 6: Final answer
    x = 18,459.06

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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.