Home / 71,421.35-107,145.56-28,730.04

Finding the Fourth Proportional to 71,421.35, 107,145.56 and 28,730.04

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Solution

The fourth proportional to 71,421.35, 107,145.56 and 28,730.04 is: 43,100.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,421.35 : 107,145.56 = 28,730.04 : x
  2. Step 2: Convert to fraction form
    71,421.35/107,145.56 = 28,730.04/x
  3. Step 3: Cross multiply
    71,421.35x = 107,145.56 × 28,730.04
  4. Step 4: Simplify right side
    71,421.35x = 3,078,296,080.97
  5. Step 5: Solve for x
    x = 3,078,296,080.97/71,421.35
  6. Step 6: Final answer
    x = 43,100.51

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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.