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Finding the Fourth Proportional to 84,793.75, 127,209.08 and 28,631.48

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Solution

The fourth proportional to 84,793.75, 127,209.08 and 28,631.48 is: 42,953.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,793.75 : 127,209.08 = 28,631.48 : x
  2. Step 2: Convert to fraction form
    84,793.75/127,209.08 = 28,631.48/x
  3. Step 3: Cross multiply
    84,793.75x = 127,209.08 × 28,631.48
  4. Step 4: Simplify right side
    84,793.75x = 3,642,183,484.19
  5. Step 5: Solve for x
    x = 3,642,183,484.19/84,793.75
  6. Step 6: Final answer
    x = 42,953.44

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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.