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Finding the Fourth Proportional to 34,894.62, 48,149.91 and 20,742.30

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Solution

The fourth proportional to 34,894.62, 48,149.91 and 20,742.30 is: 28,621.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,894.62 : 48,149.91 = 20,742.30 : x
  2. Step 2: Convert to fraction form
    34,894.62/48,149.91 = 20,742.30/x
  3. Step 3: Cross multiply
    34,894.62x = 48,149.91 × 20,742.30
  4. Step 4: Simplify right side
    34,894.62x = 998,739,878.19
  5. Step 5: Solve for x
    x = 998,739,878.19/34,894.62
  6. Step 6: Final answer
    x = 28,621.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.