Home / 84,454.08-126,638.72-28,274.88

Finding the Fourth Proportional to 84,454.08, 126,638.72 and 28,274.88

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Solution

The fourth proportional to 84,454.08, 126,638.72 and 28,274.88 is: 42,398.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,454.08 : 126,638.72 = 28,274.88 : x
  2. Step 2: Convert to fraction form
    84,454.08/126,638.72 = 28,274.88/x
  3. Step 3: Cross multiply
    84,454.08x = 126,638.72 × 28,274.88
  4. Step 4: Simplify right side
    84,454.08x = 3,580,694,611.35
  5. Step 5: Solve for x
    x = 3,580,694,611.35/84,454.08
  6. Step 6: Final answer
    x = 42,398.12

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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.