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Finding the Fourth Proportional to 84,806.20, 127,125.60 and 47,384.20

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Solution

The fourth proportional to 84,806.20, 127,125.60 and 47,384.20 is: 71,029.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,806.20 : 127,125.60 = 47,384.20 : x
  2. Step 2: Convert to fraction form
    84,806.20/127,125.60 = 47,384.20/x
  3. Step 3: Cross multiply
    84,806.20x = 127,125.60 × 47,384.20
  4. Step 4: Simplify right side
    84,806.20x = 6,023,744,855.52
  5. Step 5: Solve for x
    x = 6,023,744,855.52/84,806.20
  6. Step 6: Final answer
    x = 71,029.53

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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.