Home / 47,145.12-70,720.20-12,085.08

Finding the Fourth Proportional to 47,145.12, 70,720.20 and 12,085.08

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Solution

The fourth proportional to 47,145.12, 70,720.20 and 12,085.08 is: 18,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,145.12 : 70,720.20 = 12,085.08 : x
  2. Step 2: Convert to fraction form
    47,145.12/70,720.20 = 12,085.08/x
  3. Step 3: Cross multiply
    47,145.12x = 70,720.20 × 12,085.08
  4. Step 4: Simplify right side
    47,145.12x = 854,659,274.62
  5. Step 5: Solve for x
    x = 854,659,274.62/47,145.12
  6. Step 6: Final answer
    x = 18,128.27

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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.